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Evidence record

Why does a missing limb hurt?

Every sentence on the exploration belongs to at least one claim below. Each says what kind of statement it is, what it rests on, what the evidence does not establish, and how far it was checked. Nothing here is a score, and none of it is a verdict on a belief or a theory.

Last checked 24 September 2026.

  • Partly checked: 15
  • Source checked: 42
  • A judgement, not a fact: 9
  • Presented as open: 1

If something here is wrong, misquoted, out of date or unfair, write to support@unknownoceans.com and give the claim number, which does not change.

What the question takes for granted

A scientific question about mechanism. The phenomenon is well documented; what produces it is argued between a reorganised body map, a preserved one, and signals from the nerves that once served the limb. The page reports that argument without settling it.

  • A missing limb does hurt, in a large share of people who lose one

    Established

    Established across many studies, though estimates vary widely with the sample: about two in three on the pooled evidence, fewer in people born without a limb.

  • The pain has a single mechanism to find

    Contested

    The reviewers cited here expect more than one: central reorganisation, preserved representation and peripheral input are all argued, and the two main central accounts were reviewed together as not simply related.

  • The brain’s body map reorganises after amputation

    Contested

    Cross-sectional studies report a shift of the lip representation; a longitudinal study of three people finds the maps unchanged.

How the question is labelled

Claim: The part that is not there

Kind
Framing. Signposting. It asserts nothing a source could check.

Claim: Phantom pain

Kind
Framing. Signposting. It asserts nothing a source could check.

The question

Claim: Most people who lose a limb continue to feel it,

Kind
Present-day figure. A count, survey or report finding, as the named source gives it.
Review
Partly checked. Only part of the source could be read. What was not read is listed.

What this does not establish

Carried by one paper’s abstract, which states it as background rather than measuring it. People who lost a limb before about the age of five are the exception (claim 25).

Later work looked for

Europe PMC, 2014 on, "phantom limb sensation prevalence": nothing found that lowers the estimate for adults who lose a limb.

Claim 3 · checked 24 September 2026 · AI-assisted audit

Claim: and many feel it in pain,

Kind
Present-day figure. A count, survey or report finding, as the named source gives it.
Review
Source checked. The cited passage was read, and it says this.

Later work looked for

Europe PMC, 2020 on, "phantom limb pain prevalence": a 2024 cross-sectional survey; no larger synthesis than the 2020 meta-analysis.

Claim 4 · checked 24 September 2026 · AI-assisted audit

Claim: which means the pain is not where the injury is.

Kind
This page’s reading. A judgement the page makes from the evidence. Others read it differently.
Review
A judgement, not a fact. Reviewed for whether it is fairly put and follows from the checked claims. No source can confirm it.

Phantom pain is felt in the missing part, which is not where the tissue was damaged. Where the pain is generated is argued in claims 30 and 31.

Claim 5 · checked 24 September 2026 · AI-assisted audit

Claim: Phantom limb pain is common after amputation

Kind
Present-day figure. A count, survey or report finding, as the named source gives it.
Review
Source checked. The cited passage was read, and it says this.

Later work looked for

As claim 4.

Claim 6 · checked 24 September 2026 · AI-assisted audit

Claim: and is produced by the nervous system rather than by tissue at the site.

Kind
What the field holds. The settled view of a field, as a review, a consensus statement or a reference work gives it. Not one study.
Review
Source checked. The cited passage was read, and it says this.

What this does not establish

“The nervous system” includes the nerves that once served the limb. Which part of it generates the pain is disputed, as the summary goes on to say.

Later work looked for

Europe PMC, 2014 on, "phantom limb pain mechanism": the argument is over which part of the nervous system (claims 30 and 31), not over whether it is the nervous system.

Claim 7 · checked 24 September 2026 · AI-assisted audit

Claim: The leading explanation has been a reorganisation of the brain’s body map.

Kind
What scholars argue. A report of what specialists argue, or where they disagree.
Review
Source checked. The cited passage was read, and it says this.

Corrected

24 September 2026. Previously: “Explanations centre on reorganisation of the brain’s body map, and the evidence for that account is strong, partial and disputed in its details.” The summary called the reorganisation account “strong, partial and disputed in its details”. A longitudinal study (Schone and others, 2025) disputes whether the map reorganises at all, and a nerve-block study (Vaso and others, 2014) disputes where the pain starts. The summary now says which parts are disputed.

Claim 8 · checked 24 September 2026 · AI-assisted audit

Claim: The pain does track measurements of that map,

Kind
Experimental result. What an experiment or trial found, under its own conditions. A result in animals, cells or a simulation is not a result in people.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Phantom-limb pain as a perceptual correlate of cortical reorganization following arm amputationfirst paragraph (abstract)

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: we report a very strong direct relationship (r = 0.93) between the amount of cortical reorganization and the magnitude of phantom limb pain (but not non-painful phantom phenomena) experienced after arm amputation

  • Supports

    Brain (re)organisation following amputation: implications for phantom limb painsection 3, fifth paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Review of the field

    The source reads: The finding of a positive association between S1 remapping and PLP has been replicated using multiple paradigms and participant groups

What this does not establish

A correlation between people, in small samples. It does not say which causes which (claim 58).

Later work looked for

Europe PMC, 2020 on, "phantom limb pain reorganization": the 2025 longitudinal study (claim 41) disputes the map measurement itself; nothing retracts the correlation.

Corrected

24 September 2026. Previously: “Explanations centre on reorganisation of the brain’s body map, and the evidence for that account is strong, partial and disputed in its details.” The summary called the reorganisation account “strong, partial and disputed in its details”. A longitudinal study (Schone and others, 2025) disputes whether the map reorganises at all, and a nerve-block study (Vaso and others, 2014) disputes where the pain starts. The summary now says which parts are disputed.

Claim 9 · checked 24 September 2026 · AI-assisted audit

Claim: but whether the map reorganises at all after amputation is now disputed,

Kind
What scholars argue. A report of what specialists argue, or where they disagree.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Stable cortical body maps before and after arm amputationMain text, second paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: whether or not amputation triggers large-scale reorganization

    The sentence goes on to call this debate unresolved; the study itself found no reorganisation in three people.

  • Cuts against

    Stable cortical body maps before and after arm amputationabstract

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: We observed stable cortical representations of both hand and lips in primary sensorimotor regions.

Later work looked for

Crossref and Europe PMC, 2025 on, "stable cortical body maps amputation": no reply found yet.

Corrected

24 September 2026. Previously: “Explanations centre on reorganisation of the brain’s body map, and the evidence for that account is strong, partial and disputed in its details.” The summary called the reorganisation account “strong, partial and disputed in its details”. A longitudinal study (Schone and others, 2025) disputes whether the map reorganises at all, and a nerve-block study (Vaso and others, 2014) disputes where the pain starts. The summary now says which parts are disputed.

Claim 10 · checked 24 September 2026 · AI-assisted audit

Claim: and so is where the pain starts.

Kind
What scholars argue. A report of what specialists argue, or where they disagree.
Review
Partly checked. Only part of the source could be read. What was not read is listed.

  • Supports

    Peripheral nervous system origin of phantom limb painabstract

    Cited · Link answered, 19 October 2026 · Abstract only, 24 September 2026 · Research in people · Experiment

    The source reads: We tested the alternative hypothesis that PLP is primarily a bottom-up process, due not to the loss of input but rather to exaggerated input, generated ectopically in axotomized primary afferent neurons

  • Supports

    Phantom pain is associated with preserved structure and function in the former hand areaIntroduction, second paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Review of the field

    The source reads: phantom sensations, and pain in particular, can be triggered by bottom–up aberrant inputs, such as those relating to peripheral nerve injury

What this does not establish

Vaso and colleagues were read as an abstract only.

Later work looked for

Europe PMC, 2015 on, "dorsal root ganglion phantom limb pain": stimulation studies and a scoping review, nothing that settles it.

Corrected

24 September 2026. Previously: “Explanations centre on reorganisation of the brain’s body map, and the evidence for that account is strong, partial and disputed in its details.” The summary called the reorganisation account “strong, partial and disputed in its details”. A longitudinal study (Schone and others, 2025) disputes whether the map reorganises at all, and a nerve-block study (Vaso and others, 2014) disputes where the pain starts. The summary now says which parts are disputed.

Claim 11 · checked 24 September 2026 · AI-assisted audit

Claim: The limb is gone and the feeling is not.

Kind
Observation. Something measured or seen, as the named source reports it.
Review
Source checked. The cited passage was read, and it says this.

Later work looked for

A description of what amputees report; nothing later changes it.

Claim 12 · checked 24 September 2026 · AI-assisted audit

Claim: People report its size, its shape, its position and its movement,

Kind
Observation. Something measured or seen, as the named source reports it.
Review
Partly checked. Only part of the source could be read. What was not read is listed.

What this does not establish

The abstract describes phantoms in people born without a limb or who lost one before six; the paper was not read.

Later work looked for

Not a figure; nothing later changes the description.

Corrected

24 September 2026. Previously: “People report position, temperature, itching, and a fist clenched so tightly that the nails dig into a palm that no longer exists.” No readable cited source carries temperature, itching or nails digging into the palm. The sentence now lists what the sources do: the phantom’s size, shape, position and movement, and painful clenching spasms.

Claim 13 · checked 24 September 2026 · AI-assisted audit

Claim: and some feel the missing hand clenched in a painful spasm it cannot open.

Kind
Observation. Something measured or seen, as the named source reports it.
Review
Partly checked. Only part of the source could be read. What was not read is listed.

  • Supports

    Synaesthesia in phantom limbs induced with mirrorsabstract, result 4

    Cited · Link answered, 19 October 2026 · Abstract only, 24 September 2026 · Research in people · Case report

    The source reads: Five patients experienced involuntary painful ‘clenching spasms’ in the phantom hand and in four of them the spasms were relieved when the mirror was used to facilitate ‘opening’ of the phantom hand; opening was not possible without the mirror.

What this does not establish

Ten patients in one series; the paper itself was not read.

Later work looked for

Not a figure; the phenomenon is described in later mirror-therapy trials (claim 69).

Corrected

24 September 2026. Previously: “People report position, temperature, itching, and a fist clenched so tightly that the nails dig into a palm that no longer exists.” The clenched hand is now sourced to the mirror-box paper that described it.

Claim 14 · checked 24 September 2026 · AI-assisted audit

Claim: Nothing about that is imaginary.

Kind
This page’s reading. A judgement the page makes from the evidence. Others read it differently.
Review
A judgement, not a fact. Reviewed for whether it is fairly put and follows from the checked claims. No source can confirm it.

The page means that the experience is real and has measurable correlates in the brain: attempted phantom movements activate the sensorimotor cortex, and imagined ones do not.

Claim 15 · checked 24 September 2026 · AI-assisted audit

Claim: It is the ordinary operation of a system that builds a body from signals, running without its input.

Kind
This page’s reading. A judgement the page makes from the evidence. Others read it differently.
Review
A judgement, not a fact. Reviewed for whether it is fairly put and follows from the checked claims. No source can confirm it.

The page’s reading, close to Melzack’s: the brain holds a representation of the body that persists without the limb.

Other readings

Vaso and colleagues argue the pain is driven by too much input rather than none: abnormal firing in nerve cells that once served the limb (claims 30 and 31).

Claim 16 · checked 24 September 2026 · AI-assisted audit

What is observed

Claim: What is observed

Kind
Framing. Signposting. It asserts nothing a source could check.

It is common, and it is not in the stump

Claim: It is common,

Kind
Present-day figure. A count, survey or report finding, as the named source gives it.
Review
Source checked. The cited passage was read, and it says this.

Later work looked for

As claim 4.

Claim 18 · checked 24 September 2026 · AI-assisted audit

Claim: and it is not in the stump

Kind
What the field holds. The settled view of a field, as a review, a consensus statement or a reference work gives it. Not one study.
Review
Source checked. The cited passage was read, and it says this.

What this does not establish

Where the pain is felt, by definition, is the missing limb. Where it is generated is argued in claims 26 to 31, and pain in the residual limb is common too (claim 21).

Later work looked for

A definition; not a finding later work revises.

Claim 19 · checked 24 September 2026 · AI-assisted audit

Claim: In a survey of 914 people with limb loss, 79.9 per cent reported phantom pain in the four weeks before they were asked.

Kind
Present-day figure. A count, survey or report finding, as the named source gives it.
Review
Partly checked. Only part of the source could be read. What was not read is listed.

  • Supports

    Phantom pain, residual limb pain, and back pain in amputees: results of a national surveyabstract, Participants and Results

    Cited · Link answered, 19 October 2026 · Abstract only, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: A stratified sample by etiology of 914 persons with limb loss. ... Nearly all (95%) amputees surveyed reported experiencing 1 or more types of amputation-related pain in the previous 4 weeks. Phantom pain was reported most often (79.9%)

What this does not establish

Read as an abstract. The sample was people who had contacted the Amputee Coalition of America, interviewed by telephone, which is not the whole population of amputees.

Later work looked for

Europe PMC, 2005 on, "phantom limb pain prevalence": a 2020 meta-analysis gives a lower pooled figure, now on the page (claim 22).

Claim 20 · checked 24 September 2026 · AI-assisted audit

Claim: Pain in the residual limb itself was reported separately, by 67.7 per cent.

Kind
Present-day figure. A count, survey or report finding, as the named source gives it.
Review
Partly checked. Only part of the source could be read. What was not read is listed.

What this does not establish

As claim 20: an abstract, and a self-selected American sample.

Later work looked for

As claim 20.

Claim 21 · checked 24 September 2026 · AI-assisted audit

Claim: A 2020 meta-analysis of studies from many countries put phantom pain lower, at 64 per cent, and lower again in developing countries.

Kind
Present-day figure. A count, survey or report finding, as the named source gives it.
Review
Source checked. The cited passage was read, and it says this.

What this does not establish

Heterogeneity between the pooled studies was very high, so 64 per cent is an average over very different samples.

Later work looked for

Europe PMC, 2020 on, "phantom limb pain prevalence meta-analysis": nothing larger since.

Corrected

24 September 2026. Previously: “” The only prevalence figure on the page came from one self-selected American survey. A later meta-analysis gives a lower pooled figure, and the reader should see both.

Claim 22 · checked 24 September 2026 · AI-assisted audit

Claim: It happens to people who never had the limb.

Kind
Observation. Something measured or seen, as the named source reports it.
Review
Partly checked. Only part of the source could be read. What was not read is listed.

What this does not establish

Read as an abstract. Phantoms occur in a minority of people born without a limb, and painful ones in fewer.

Later work looked for

Europe PMC, 1998 on, "phantom congenital": a 2023 study of 99 adults finds phantom pain uncommon in this group, now on the page (claim 25).

Claim 23 · checked 24 September 2026 · AI-assisted audit

Claim: Among 125 people with missing limbs, phantoms were reported by at least a fifth of those born limb-deficient, and a fifth of those phantoms hurt.

Kind
Observation. Something measured or seen, as the named source reports it.
Review
Partly checked. Only part of the source could be read. What was not read is listed.

  • Supports

    Phantom limbs in people with congenital limb deficiency or amputation in early childhoodabstract

    Cited · Link answered, 19 October 2026 · Abstract only, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: a sample of 125 people with missing limbs ... phantom limbs are experienced by at least 20% of congenitally limb-deficient subjects ... reported as painful by 20% of subjects with phantoms in the congenital limb deficient group

What this does not establish

Read as an abstract. Fifteen people born limb-deficient reported phantoms, so a fifth of them is about three people.

Later work looked for

As claim 23.

Claim 24 · checked 24 September 2026 · AI-assisted audit

Claim: A 2023 study of 99 adults born without a limb found phantom pain uncommon among them.

Kind
Observation. Something measured or seen, as the named source reports it.
Review
Partly checked. Only part of the source could be read. What was not read is listed.

  • Supports

    Prevalence of phantom phenomena in congenital and early-life amputeesabstract

    Cited · Link answered, 19 October 2026 · Abstract only, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: we assessed the presence of several phantom phenomena in a sample of 99 adult unilateral congenital amputees

  • Supports

    Prevalence of phantom phenomena in congenital and early-life amputeesabstract, Perspective

    Cited · Link answered, 19 October 2026 · Abstract only, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: The prevalence of phantom limb pain, residual limb pain, and non-painful phantom limb sensation in congenital amputees and participants with an amputation early in life is low.

What this does not establish

Read as an abstract, which does not give the percentage. The authors suggest the low rate may reflect missing or reduced nociceptive input from the residual limb.

Later work looked for

Found by the currency search for claim 23; nothing later.

Corrected

24 September 2026. Previously: “” The congenital evidence rested on one 1997 sample in which three people reported painful phantoms. A larger later study finds phantom pain uncommon in this group, which the page should say.

Claim 25 · checked 24 September 2026 · AI-assisted audit

Claim: The older assumption was that the trouble lay in the stump.

Kind
Historical claim. A statement about the past that historical evidence can test.
Review
Partly checked. Only part of the source could be read. What was not read is listed.

  • Supports

    Phantom limb pain: a case of maladaptive CNS plasticity?abstract

    Cited · Link answered, 19 October 2026 · Abstract only, 24 September 2026 · Texts · Review of the field

    The source reads: It has often been viewed as a type of mental disorder or has been assumed to stem from pathological alterations in the region of the amputation stump.

What this does not establish

Read as an abstract. The same sentence says phantom pain was also often treated as a mental disorder.

Claim 26 · checked 24 September 2026 · AI-assisted audit

Claim: The evidence gathered since points mainly to the central nervous system,

Kind
What scholars argue. A report of what specialists argue, or where they disagree.
Review
Partly checked. Only part of the source could be read. What was not read is listed.

  • Supports

    Phantom limb pain: a case of maladaptive CNS plasticity?abstract

    Cited · Link answered, 19 October 2026 · Abstract only, 24 September 2026 · Research in people · Review of the field

    The source reads: In the past decade, evidence has accumulated that phantom pain might be a phenomenon of the CNS

  • Supports

    Peripheral nervous system origin of phantom limb painabstract

    Cited · Link answered, 19 October 2026 · Abstract only, 24 September 2026 · Research in people · Experiment

    The source reads: There is currently a broad consensus among investigators that PLP is a top-down phenomenon, triggered by loss of sensory input and caused by maladaptive cortical plasticity.

What this does not establish

Both sources read as abstracts. Vaso and colleagues describe this consensus in order to dispute it.

Later work looked for

Europe PMC, 2014 on, "phantom limb pain peripheral": the peripheral challenge is now on the page (claims 29 to 31).

Corrected

24 September 2026. Previously: “The evidence gathered since points instead to the central nervous system,” “Instead” ruled out a peripheral contribution. A nerve-block study argues the pain starts in the peripheral nervous system, and the 2013 imaging study also allows peripheral input a role.

Claim 27 · checked 24 September 2026 · AI-assisted audit

Claim: and a limb that was never there is a case the stump account cannot reach.

Kind
This page’s reading. A judgement the page makes from the evidence. Others read it differently.
Review
A judgement, not a fact. Reviewed for whether it is fairly put and follows from the checked claims. No source can confirm it.

A person born without a limb has had no amputation, so an account that locates the trouble in an amputation stump cannot explain their phantoms.

Other readings

Diers and colleagues (2023) suggest that phantom pain is rare in this group because of missing input from the residual limb, which gives the periphery a part even here.

Corrected

24 September 2026. Previously: “the case the stump account cannot reach” Other evidence bears on the stump account too (claims 30 and 31); this is one case, not the decisive one.

Claim 28 · checked 24 September 2026 · AI-assisted audit

Claim: The periphery has not dropped out.

Kind
This page’s reading. A judgement the page makes from the evidence. Others read it differently.
Review
A judgement, not a fact. Reviewed for whether it is fairly put and follows from the checked claims. No source can confirm it.

Introduces claims 30 and 31.

Corrected

24 September 2026. Previously: “” Added with claim 30.

Claim 29 · checked 24 September 2026 · AI-assisted audit

Claim: In 2014 a study of 31 amputees found that a local anaesthetic delivered to the spinal nerve roots extinguished phantom pain, quickly and reversibly,

Kind
Experimental result. What an experiment or trial found, under its own conditions. A result in animals, cells or a simulation is not a result in people.
Review
Partly checked. Only part of the source could be read. What was not read is listed.

  • Supports

    Peripheral nervous system origin of phantom limb painabstract

    Cited · Link answered, 19 October 2026 · Abstract only, 24 September 2026 · Research in people · Experiment

    The source reads: In 31 amputees, the local anesthetic lidocaine was applied intrathecally and/or to the DRG surface (intraforaminal epidural block). This rapidly and reversibly extinguished PLP and also nonpainful phantom limb sensation (npPLS). Control injections were ineffective.

What this does not establish

Read as an abstract, which says the 31 were given the anaesthetic but not how many of them had phantom pain or how many it relieved. One group, no independent replication found. “Spinal nerve roots” stands for the dorsal root ganglia and the spinal fluid around the roots, where the drug was applied.

Later work looked for

Europe PMC, 2015 on, "dorsal root ganglion phantom limb pain": stimulation of the ganglia has been tried as treatment; no independent replication of the block found.

Corrected

24 September 2026. Previously: “” The page said the evidence points to the central nervous system and did not mention the principal study arguing the opposite. The rival result is now reported, with who holds it.

24 September 2026. Previously: “In 2014 a local anaesthetic delivered to the spinal nerve roots extinguished phantom pain in 31 amputees, quickly and reversibly,” The abstract says the anaesthetic was given to 31 amputees and that it extinguished phantom pain, without saying how many of the 31 had the pain or responded; the page read as if it had worked in every one of them. The figure now names who was studied.

Claim 30 · checked 24 September 2026 · AI-assisted audit

Claim: and its authors argue that the pain starts there.

Kind
What scholars argue. A report of what specialists argue, or where they disagree.
Review
Partly checked. Only part of the source could be read. What was not read is listed.

What this does not establish

Read as an abstract.

Other readings

The central accounts on this page, reorganisation (Flor) and preserved representation (Makin), both locate the pain’s correlates in the cortex; Makin and colleagues allow that peripheral input may keep the representation alive.

Later work looked for

As claim 30.

Corrected

24 September 2026. Previously: “” Added with claim 30.

Claim 31 · checked 24 September 2026 · AI-assisted audit

The map and the pain

Claim: The map and the pain

Kind
Framing. Signposting. It asserts nothing a source could check.

Corrected

24 September 2026. Previously: “The body map changes” The heading asserted, under “What is observed”, that the body map changes. Whether it does is disputed (claim 40).

Claim: The cortex holds a map of the body, and on it the face sits beside the hand.

Kind
What the field holds. The settled view of a field, as a review, a consensus statement or a reference work gives it. Not one study.
Review
Source checked. The cited passage was read, and it says this.

What this does not establish

The review notes it is still debated whether the hand borders the upper or the lower face in people.

Later work looked for

How the map is laid out; not a finding later work revises.

Corrected

24 September 2026. Previously: “The cortex holds a map of the body, arranged so that neighbouring parts sit next to each other.” The map does not keep every bodily neighbour together: the face lies beside the hand, which is the fact the rest of the passage needs.

Claim 33 · checked 24 September 2026 · AI-assisted audit

Claim: In monkeys, when input from an arm is cut, the hand territory starts to answer to touch on the face.

Kind
Experimental result. What an experiment or trial found, under its own conditions. A result in animals, cells or a simulation is not a result in people.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Brain (re)organisation following amputation: implications for phantom limb painsection 3, first paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in animals · Review of the field

    The source reads: Perhaps the most dramatic demonstration of remapping occurs following arm deafferentation. Here the hand area of monkeys becomes responsive to inputs from the lower face

What this does not establish

A result in monkeys. The review notes the activity in the deprived cortex is much weaker than native face activity.

Later work looked for

Found nothing that revises the monkey result; the human dispute is claims 40 to 42.

Corrected

24 September 2026. Previously: “When input from one part stops, the neighbouring territories encroach on the region that has lost its input.” The encroachment was a finding in monkeys written as a general rule. In human arm amputees clear facial activity has not been found in the missing hand cortex, so the two are now stated separately.

Claim 34 · checked 24 September 2026 · AI-assisted audit

Claim: In human arm amputees, studies at a single point in time found the lip representation shifted towards the former hand area.

Kind
Observation. Something measured or seen, as the named source reports it.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Brain (re)organisation following amputation: implications for phantom limb painsection 3, second paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Review of the field

    The source reads: has not identified clear facial activity in the missing hand cortex ... Instead, multiple studies examining activity associated with stimulation of the lower face ... have found that the centre (or spatial extent) of the lip cluster becomes medially shifted in the deprived hemisphere

  • Cuts against

    Stable cortical body maps before and after arm amputationabstract

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: We observed stable cortical representations of both hand and lips in primary sensorimotor regions.

  • Supports

    Stable cortical body maps before and after arm amputationMain text, third paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: a fundamental issue with the evidence on both sides of this debate is a methodological reliance on cross-sectional designs (that is, comparisons between participants)

What this does not establish

The shift is measured against the other hemisphere or against other people, not against the same brain before amputation.

Later work looked for

Crossref and Europe PMC, 2020 on, "lip representation amputation": the 2025 longitudinal study finds no shift; now on the page (claims 40 to 42).

Corrected

24 September 2026. Previously: “” Added so the human observation is stated as what it is, a shift found in cross-sectional studies, rather than as encroachment.

Claim 35 · checked 24 September 2026 · AI-assisted audit

Claim: The size of that shift correlates with the amount of phantom pain reported,

Kind
Experimental result. What an experiment or trial found, under its own conditions. A result in animals, cells or a simulation is not a result in people.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Phantom-limb pain as a perceptual correlate of cortical reorganization following arm amputationfirst paragraph (abstract)

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: we report a very strong direct relationship (r = 0.93) between the amount of cortical reorganization and the magnitude of phantom limb pain (but not non-painful phantom phenomena) experienced after arm amputation

  • Supports

    Brain (re)organisation following amputation: implications for phantom limb painsection 3, fifth paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Review of the field

    The source reads: The finding of a positive association between S1 remapping and PLP has been replicated using multiple paradigms and participant groups

What this does not establish

A correlation, not a cause (claims 57 to 65).

Later work looked for

As claim 9.

Corrected

24 September 2026. Previously: “The amount of that reorganisation correlates” Follows the rewording of the paragraph above.

Claim 36 · checked 24 September 2026 · AI-assisted audit

Claim: and in the study that established it, on thirteen arm amputees measured neuromagnetically, the correlation was 0.93.

Kind
Experimental result. What an experiment or trial found, under its own conditions. A result in animals, cells or a simulation is not a result in people.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Phantom-limb pain as a perceptual correlate of cortical reorganization following arm amputationfirst paragraph (abstract)

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: Using non-invasive neuromagnetic imaging techniques ... we report a very strong direct relationship (r = 0.93) between the amount of cortical reorganization and the magnitude of phantom limb pain (but not non-painful phantom phenomena) experienced after arm amputation

  • Supports

    Phantom-limb pain as a perceptual correlate of cortical reorganization following arm amputationsecond paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: This information served as the sole basis for the selection of a representative sample of 13 subjects with widely varying degrees of phantom-limb pain.

What this does not establish

Thirteen people, twelve of them men. A correlation this strong in a sample this small has a wide margin of error.

Later work looked for

Europe PMC, 1995 on: the association has been replicated (claim 38); the 2025 study disputes the shift itself.

Corrected

24 September 2026. Previously: “on arm amputees measured neuromagnetically” The sample size is the first thing a reader needs to weigh a correlation of 0.93.

Claim 37 · checked 24 September 2026 · AI-assisted audit

Claim: It has been replicated,

Kind
What scholars argue. A report of what specialists argue, or where they disagree.
Review
Source checked. The cited passage was read, and it says this.

Corrected

24 September 2026. Previously: “That is the central evidence for the standard account.” The 2020 review reports replication across paradigms and groups, which the page did not say.

Claim 38 · checked 24 September 2026 · AI-assisted audit

Claim: and it is the central evidence for the standard account.

Kind
What scholars argue. A report of what specialists argue, or where they disagree.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Phantom pain is associated with preserved structure and function in the former hand areaIntroduction, first paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Review of the field

    The source reads: The maladaptive plasticity model is most clearly supported by expansions or shifts in cortical lip representations towards the deprived hand area: the greater the remapping, the more severe the pain

Claim 39 · checked 24 September 2026 · AI-assisted audit

Claim: The shift itself is now disputed.

Kind
What scholars argue. A report of what specialists argue, or where they disagree.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Stable cortical body maps before and after arm amputationDiscussion

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: Combined with cross-sectional designs, this has incorrectly led to the impression of large-scale reorganization of the lip representation after amputation.

  • Context

    Brain (re)organisation following amputation: implications for phantom limb painsection 3, second paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Review of the field

    The source reads: have found that the centre (or spatial extent) of the lip cluster becomes medially shifted in the deprived hemisphere

Later work looked for

Crossref and Europe PMC, 2025 on, "stable cortical body maps": no published reply found.

Corrected

24 September 2026. Previously: “” The page reported cortical reorganisation as observed. A 2025 longitudinal study finds none, and the disagreement belongs on the page.

Claim 40 · checked 24 September 2026 · AI-assisted audit

Claim: A 2025 study scanned three people before and up to five years after arm amputation and found their hand and lip maps unchanged.

Kind
Experimental result. What an experiment or trial found, under its own conditions. A result in animals, cells or a simulation is not a result in people.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Stable cortical body maps before and after arm amputationabstract

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: Using longitudinal neuroimaging in three adults, followed before and up to 5 years after arm amputation, we compared cortical activity elicited by movement of the hand (before amputation) versus phantom hand (after amputation) and lips (before and after amputation).

  • Supports

    Stable cortical body maps before and after arm amputationabstract

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: We observed stable cortical representations of both hand and lips in primary sensorimotor regions.

What this does not establish

Three people, measured by movement rather than touch. The study does not report whether the maps relate to their phantom pain, and it compares each person with controls rather than with a larger patient group over time.

Other readings

Flor and colleagues’ cross-sectional studies report the lip shift and its link to pain (claims 35 to 37).

Later work looked for

Published August 2025; nothing later found.

Corrected

24 September 2026. Previously: “” Added with claim 40.

Claim 41 · checked 24 September 2026 · AI-assisted audit

Claim: Its authors argue that single-time comparisons, and analyses that ignored the phantom hand’s own activity, had produced the appearance of reorganisation.

Kind
What scholars argue. A report of what specialists argue, or where they disagree.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Stable cortical body maps before and after arm amputationDiscussion

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: previous studies determined S1 topography by applying a ‘winner-takes-all’ strategy, probing responses to remaining (intact) body parts and noting the most responsive body parts in the input-deprived cortex. Ignoring phantom representations in these analyses leads to severe biases

  • Supports

    Stable cortical body maps before and after arm amputationDiscussion

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: Combined with cross-sectional designs, this has incorrectly led to the impression of large-scale reorganization of the lip representation after amputation.

Other readings

The study is from Makin’s group, the proponents of the preserved-representation account; the reorganisation account’s authors have not, as far as this search found, replied.

Corrected

24 September 2026. Previously: “” Added with claim 40.

Claim 42 · checked 24 September 2026 · AI-assisted audit

Claim: A face touched in a particular place can be felt on a phantom hand.

Kind
Observation. Something measured or seen, as the named source reports it.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Phantom-limb pain as a perceptual correlate of cortical reorganization following arm amputationsecond paragraph and Figure 2 methods

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: facial remapping ... phantom sensations upon non-painful stimulation of the face with isomorphism between facial stimulation sites and the location of phantom sensations

  • Context

    Perceptual correlates of massive cortical reorganizationabstract

    Cited · Link answered, 19 October 2026 · Abstract only, 24 September 2026 · Research in people · Case report

    The source reads: In patient VQ, stimuli applied to the lower face or 7 cm above the stump evoked precisely localized referred sensations in individual digits

What this does not establish

In the 1995 sample it occurred in 4 of 13 people.

Later work looked for

Not a figure; the phenomenon is not in dispute, its explanation is (claims 45 and 46).

Corrected

24 September 2026. Previously: “A face touched in a particular place can be felt on a phantom hand, because the face sits next to the hand on the map.” The “because” stated an explanation as established. It is Ramachandran’s interpretation, now attributed (claim 45), and the 1995 study found the effect unrelated to measured reorganisation (claim 46).

Claim 43 · checked 24 September 2026 · AI-assisted audit

Claim: In one patient, touching the lower face produced sensations localised to individual fingers.

Kind
Observation. Something measured or seen, as the named source reports it.
Review
Partly checked. Only part of the source could be read. What was not read is listed.

  • Supports

    Perceptual correlates of massive cortical reorganizationabstract

    Cited · Link answered, 19 October 2026 · Abstract only, 24 September 2026 · Research in people · Case report

    The source reads: In patient VQ, stimuli applied to the lower face or 7 cm above the stump evoked precisely localized referred sensations in individual digits which were often modality specific.

What this does not establish

One patient, read as an abstract. The same patient also referred sensations from a point above the stump.

Later work looked for

A case observation; nothing later changes it.

Claim 44 · checked 24 September 2026 · AI-assisted audit

Claim: Ramachandran and colleagues read this as the face taking over the hand’s territory;

Kind
What scholars argue. A report of what specialists argue, or where they disagree.
Review
Partly checked. Only part of the source could be read. What was not read is listed.

  • Supports

    Perceptual correlates of massive cortical reorganizationabstract

    Cited · Link answered, 19 October 2026 · Abstract only, 24 September 2026 · Research in people · Case report

    The source reads: Following long-term deafferentation of one upper limb in adult primates, the cortical areas corresponding to that limb become responsive to stimuli applied to the face. ... These effects may be a direct perceptual correlate of the physiological observations

What this does not establish

Read as an abstract, which offers the reading with “may be”.

Corrected

24 September 2026. Previously: “” Attributes the explanation the page had stated as fact.

Claim 45 · checked 24 September 2026 · AI-assisted audit

Claim: in the 1995 study, whether a patient felt it was unrelated to how far the map had shifted.

Kind
Experimental result. What an experiment or trial found, under its own conditions. A result in animals, cells or a simulation is not a result in people.
Review
Source checked. The cited passage was read, and it says this.

What this does not establish

Four people with the effect in a sample of thirteen.

Later work looked for

Europe PMC, 1995 on, "referred sensations phantom reorganization": nothing found that reverses it.

Corrected

24 September 2026. Previously: “” The same study the page leans on for the pain correlation found referred sensations unrelated to the map shift, which the old “because” contradicted.

Claim 46 · checked 24 September 2026 · AI-assisted audit

Claim: The standard account

Kind
Framing. Signposting. It asserts nothing a source could check.

Claim: Input stops

Kind
What a model says. What a theory or model predicts or describes, which is not the same as what has been observed.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Brain (re)organisation following amputation: implications for phantom limb painabstract

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Review of the field

    The source reads: Following arm amputation the region that represented the missing hand in primary somatosensory cortex (S1) becomes deprived of its primary input, resulting in changed boundaries of the S1 body map.

What this does not establish

The phantom hand’s cortex still receives motor and other inputs (claim 49).

Later work looked for

How a mechanism is described; not a finding later work revises beyond what claims 40 to 42 report.

Claim 48 · checked 24 September 2026 · AI-assisted audit

Claim: The limb is gone, and the region of cortex devoted to it loses its main input.

Kind
What a model says. What a theory or model predicts or describes, which is not the same as what has been observed.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Brain (re)organisation following amputation: implications for phantom limb painabstract

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Review of the field

    The source reads: Following arm amputation the region that represented the missing hand in primary somatosensory cortex (S1) becomes deprived of its primary input, resulting in changed boundaries of the S1 body map.

What this does not establish

Loses its primary input from the limb, not all input: attempted phantom movements still activate it.

Later work looked for

How a mechanism is described; not a finding later work revises beyond what claims 40 to 42 report.

Corrected

24 September 2026. Previously: “The limb is gone, and the region of cortex devoted to it receives nothing.” “Receives nothing” is not what the account says and is not true: the region loses its primary input, and phantom movements still drive it.

Claim 49 · checked 24 September 2026 · AI-assisted audit

Claim: Neighbours move in

Kind
What a model says. What a theory or model predicts or describes, which is not the same as what has been observed.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Phantom pain is associated with preserved structure and function in the former hand areaIntroduction, first paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Review of the field

    The source reads: following loss of sensory input, the deprived hand area of the primary sensorimotor cortex becomes responsive to inputs from cortical neighbours (for example, face), thereby triggering pain representations relating to the hand

What this does not establish

Disputed in people (claims 40 to 42).

Later work looked for

How a mechanism is described; not a finding later work revises beyond what claims 40 to 42 report.

Claim 50 · checked 24 September 2026 · AI-assisted audit

Claim: Adjacent representations, the face for a hand, expand into the silent territory.

Kind
What a model says. What a theory or model predicts or describes, which is not the same as what has been observed.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Phantom pain is associated with preserved structure and function in the former hand areaIntroduction, first paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Review of the field

    The source reads: following loss of sensory input, the deprived hand area of the primary sensorimotor cortex becomes responsive to inputs from cortical neighbours (for example, face), thereby triggering pain representations relating to the hand

  • Cuts against

    Stable cortical body maps before and after arm amputationabstract

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: We observed stable cortical representations of both hand and lips in primary sensorimotor regions.

What this does not establish

Shown in monkeys. In human arm amputees, clear facial activity in the hand cortex has not been found, and a longitudinal study finds no change at all (claim 41).

Later work looked for

How a mechanism is described; not a finding later work revises beyond what claims 40 to 42 report.

Corrected

24 September 2026. Previously: “Adjacent representations, the face for a hand or the genitals for a foot, expand into the silent territory.” No cited source carries the foot and genitals example.

Claim 51 · checked 24 September 2026 · AI-assisted audit

Claim: The signal is misread

Kind
What a model says. What a theory or model predicts or describes, which is not the same as what has been observed.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Brain (re)organisation following amputation: implications for phantom limb painsection 3, fifth paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Review of the field

    The source reads: it has been proposed that the displaced facial inputs caused by the deprivation-triggered remapping prompt aberrant processing in the S1 hand area, which may in turn be interpreted as phantom sensation or pain arising from the missing hand

What this does not establish

Proposed, as the review says; the mechanism by which it becomes pain is not established.

Later work looked for

How a mechanism is described; not a finding later work revises beyond what claims 40 to 42 report.

Corrected

24 September 2026. Previously: “The map disagrees with itself” Renamed with the step below, which no longer describes a mismatch.

Claim 52 · checked 24 September 2026 · AI-assisted audit

Claim: Signals arriving in the reorganised region are still read as coming from the missing limb, and are felt there as sensation or pain.

Kind
What a model says. What a theory or model predicts or describes, which is not the same as what has been observed.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Brain (re)organisation following amputation: implications for phantom limb painsection 3, fifth paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Review of the field

    The source reads: it has been proposed that the displaced facial inputs caused by the deprivation-triggered remapping prompt aberrant processing in the S1 hand area, which may in turn be interpreted as phantom sensation or pain arising from the missing hand

What this does not establish

The review gives this as a proposal (“may in turn be interpreted”). How displaced input would turn into pain is one of the questions it lists as open.

Later work looked for

How a mechanism is described; not a finding later work revises beyond what claims 40 to 42 report.

Corrected

24 September 2026. Previously: “Signals arriving in the reorganised region are still read as coming from the missing limb, and the mismatch between intended movement and absent feedback is experienced as pain.” The mismatch between intended movement and feedback is a different account from reorganisation, and no cited source states it. The step now says what the reorganisation account proposes.

Claim 53 · checked 24 September 2026 · AI-assisted audit

What is causing what

Claim: What is causing what

Kind
Framing. Signposting. It asserts nothing a source could check.

Claim: The body you feel is drawn by the brain, and it does not need the original to go on drawing it.

Kind
This page’s reading. A judgement the page makes from the evidence. Others read it differently.
Review
A judgement, not a fact. Reviewed for whether it is fairly put and follows from the checked claims. No source can confirm it.

The page’s reading of the phantom: the body map persists without the limb.

  • Context

    Stable cortical body maps before and after arm amputationDiscussion

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: S1 is not a passive relay of its peripheral input, but an active supporter of a resilient ‘model’ of the body, even after amputation

  • Context

    Phantom limbs in people with congenital limb deficiency or amputation in early childhoodabstract, last sentence

    Cited · Link answered, 19 October 2026 · Abstract only, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: these phantom experiences provide evidence of a distributed neural representation of the body that is in part genetically determined

Other readings

Vaso and colleagues hold that the limb’s former nerve cells keep sending signals (claim 31), which would make the original’s nerves part of the drawing.

Claim 55 · checked 24 September 2026 · AI-assisted audit

Whether reorganisation causes the pain

Claim: Whether reorganisation causes the pain

Kind
Framing. Signposting. It asserts nothing a source could check.

Claim: The correlation is robust

Kind
What scholars argue. A report of what specialists argue, or where they disagree.
Review
Source checked. The cited passage was read, and it says this.

What this does not establish

Robust as a correlation between people; the 2025 study questions how the shift is measured (claim 42).

Claim 57 · checked 24 September 2026 · AI-assisted audit

Claim: and the direction is not settled.

Kind
Open question. Something the page says is not known.
Review
Presented as open. The page says this is unresolved, and the review found that it is.

  • Supports

    Brain (re)organisation following amputation: implications for phantom limb painsection 4, first paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Review of the field

    The source reads: These studies show that S1 changes and treatment-induced reductions in PLP covary, but the direction of the relationship, i.e. if the brain changes are a cause or consequence of the change in PLP cannot be determined from these studies.

Claim 58 · checked 24 September 2026 · AI-assisted audit

Claim: Pain can itself alter the map,

Kind
Experimental result. What an experiment or trial found, under its own conditions. A result in animals, cells or a simulation is not a result in people.
Review
Source checked. The cited passage was read, and it says this.

What this does not establish

Shown for acute pain, as cited by the review. That chronic phantom pain drives the change is Makin and colleagues’ proposal, not a result.

Later work looked for

Europe PMC, 2013 on, "chronic pain cortical plasticity amputation": nothing that settles the direction.

Corrected

24 September 2026. Previously: “Persistent pain can itself drive cortical change,” That persistent pain drives cortical change is a proposal; what has been shown is that acute pain alters measured distances on the map.

Claim 59 · checked 24 September 2026 · AI-assisted audit

Claim: which would make the reorganisation a consequence.

Kind
This page’s reading. A judgement the page makes from the evidence. Others read it differently.
Review
A judgement, not a fact. Reviewed for whether it is fairly put and follows from the checked claims. No source can confirm it.

The reverse of the direction Flor and colleagues proposed in 1995.

Claim 60 · checked 24 September 2026 · AI-assisted audit

Claim: A 2013 study argues close to the opposite.

Kind
What scholars argue. A report of what specialists argue, or where they disagree.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Phantom pain is associated with preserved structure and function in the former hand areaabstract

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Observational study: associations, not causes

    The source reads: We therefore propose that contrary to the maladaptive model, cortical plasticity associated with phantom pain is driven by powerful and long-lasting subjective sensory experience

Claim 61 · checked 24 September 2026 · AI-assisted audit

Claim: Imaging 18 amputees with and without phantom pain, it found the representation of the missing hand preserved rather than overwritten,

Kind
Experimental result. What an experiment or trial found, under its own conditions. A result in animals, cells or a simulation is not a result in people.
Review
Source checked. The cited passage was read, and it says this.

What this does not establish

Eighteen people, compared at one time with controls. Grey matter in the deprived cortex was reduced overall; preservation was relative, and tracked pain.

Later work looked for

Europe PMC, 2013 on: a 2019 7T study from the same group and the 2025 longitudinal study (claim 41) find the hand map preserved.

Claim 62 · checked 24 September 2026 · AI-assisted audit

Claim: and the more phantom pain people had, the more of its structure and activity their former hand area had kept.

Kind
Experimental result. What an experiment or trial found, under its own conditions. A result in animals, cells or a simulation is not a result in people.
Review
Source checked. The cited passage was read, and it says this.

What this does not establish

Correlations in eighteen people (r of 0.67 for activity and 0.60 for grey matter). The same direction problem applies as to the reorganisation correlation.

Later work looked for

As claim 62.

Corrected

24 September 2026. Previously: “and the people in pain were the ones whose former hand area had kept its structure and function most intact.” The study reports a graded correlation, not a division into people with and without pain.

Claim 63 · checked 24 September 2026 · AI-assisted audit

Claim: In 2020 the authors of the two accounts reviewed the field together.

Kind
Historical claim. A statement about the past that historical evidence can test.
Review
Source checked. The cited passage was read, and it says this.

Flor led the 1995 reorganisation study and Makin the 2013 preserved-representation study.

Claim 64 · checked 24 September 2026 · AI-assisted audit

Claim: On the studies where a treatment changes both the brain and the pain, their verdict is that the two move together and that nothing in those studies says which way the causation runs.

Kind
What scholars argue. A report of what specialists argue, or where they disagree.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Brain (re)organisation following amputation: implications for phantom limb painsection 4, first paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Review of the field

    The source reads: These studies show that S1 changes and treatment-induced reductions in PLP covary, but the direction of the relationship, i.e. if the brain changes are a cause or consequence of the change in PLP cannot be determined from these studies.

What this does not establish

The review adds that brain-stimulation studies can begin to test causation, and that its overall finding is that there is no simple relationship between reorganisation, pain and preserved representation.

Claim 65 · checked 24 September 2026 · AI-assisted audit

Whether mirrors help

Claim: Whether mirrors help

Kind
Framing. Signposting. It asserts nothing a source could check.

Claim: Placing a mirror so that the intact limb appears where the missing one was gives the brain the sight of a limb in the empty place, which is meant to restore its representation and so quiet the pain.

Kind
Hypothesis. A proposed explanation, not an established one.
Review
Source checked. The cited passage was read, and it says this.

What this does not establish

The rationale, as stated by the reviewers with “might”. Whether it works is claims 70 to 73.

Later work looked for

The rationale of a treatment; its test is claims 70 to 73.

Corrected

24 September 2026. Previously: “is meant to restore agreement between what is intended and what is seen, and so quiet the mismatch.” The rationale is now stated as the cited review states it, and no longer depends on the mismatch account removed from the module above.

Claim 67 · checked 24 September 2026 · AI-assisted audit

Claim: It is the treatment the standard account predicts,

Kind
What scholars argue. A report of what specialists argue, or where they disagree.
Review
Source checked. The cited passage was read, and it says this.

  • Supports

    Brain (re)organisation following amputation: implications for phantom limb painsection 4, first paragraph

    Cited · Link answered, 19 October 2026 · Read in full, 24 September 2026 · Research in people · Review of the field

    The source reads: The research on S1 remapping after amputation has yielded novel interventions that target the presumed maladaptive brain remapping. In mirror treatment

What this does not establish

Ramachandran proposed the mirror box in 1996 from his own observations, so “predicts” means the account supplies its rationale.

Claim 68 · checked 24 September 2026 · AI-assisted audit

Claim: and patients do report relief.

Kind
Observation. Something measured or seen, as the named source reports it.
Review
Source checked. The cited passage was read, and it says this.

What this does not establish

Relief within the mirror groups, which does not separate the mirror from placebo or the passage of time.

Later work looked for

As claim 70.

Claim 69 · checked 24 September 2026 · AI-assisted audit

Claim: The trials that compare it against a placebo do not establish it.

Kind
Experimental result. What an experiment or trial found, under its own conditions. A result in animals, cells or a simulation is not a result in people.
Review
Source checked. The cited passage was read, and it says this.

What this does not establish

Five small trials, 256 patients in all.

Later work looked for

Europe PMC, 2022 on, "mirror therapy phantom limb pain": two meta-analyses of 2022 find a short-term benefit with looser inclusion (claim 73); no placebo-controlled trial since that settles it.

Claim 70 · checked 24 September 2026 · AI-assisted audit

Claim: A 2023 review found five of them, and one reported a significant difference from the control group.

Kind
Experimental result. What an experiment or trial found, under its own conditions. A result in animals, cells or a simulation is not a result in people.
Review
Source checked. The cited passage was read, and it says this.

What this does not establish

Only four of the five made a between-group comparison.

Later work looked for

As claim 70.

Claim 71 · checked 24 September 2026 · AI-assisted audit

Claim: The reviewers put that down to small samples and low methodological quality rather than to a settled negative,

Kind
What scholars argue. A report of what specialists argue, or where they disagree.
Review
Source checked. The cited passage was read, and it says this.

Claim 72 · checked 24 September 2026 · AI-assisted audit

Claim: and they note that looser meta-analyses reach the opposite conclusion.

Kind
What scholars argue. A report of what specialists argue, or where they disagree.
Review
Source checked. The cited passage was read, and it says this.

“Looser” is the page’s word for meta-analyses that admitted trials without a placebo comparison and, in the reviewers’ reading, used a fixed-effect model and low-quality studies.

Other readings

Xie and colleagues conclude that mirror therapy has short-term benefits; Guémann and colleagues dispute their methods.

Claim 73 · checked 24 September 2026 · AI-assisted audit

Claim: So the treatment is unproven rather than refuted,

Kind
This page’s reading. A judgement the page makes from the evidence. Others read it differently.
Review
A judgement, not a fact. Reviewed for whether it is fairly put and follows from the checked claims. No source can confirm it.

Follows from claims 70 to 73: the placebo-controlled trials are too few and too weak to show an effect or its absence.

Corrected

24 September 2026. Previously: “So the treatment is untested rather than refuted,” It has been tested, in five placebo-controlled trials; what the trials have not done is establish it.

Claim 74 · checked 24 September 2026 · AI-assisted audit

Claim: and it cannot at present be used as an argument for the account that inspired it.

Kind
This page’s reading. A judgement the page makes from the evidence. Others read it differently.
Review
A judgement, not a fact. Reviewed for whether it is fairly put and follows from the checked claims. No source can confirm it.

A treatment not shown to work cannot count as evidence for its rationale.

Claim 75 · checked 24 September 2026 · AI-assisted audit

What was read