Evidence map›Paper›PMID 32849197›Full record

ReviewFrontiers in neurology2020

Intracortical Inhibition in the Affected Hemisphere in Limb Amputation.

Ludmilla Candido Santos, Fernanda Gushken, Gabriela Morelli Gadotti, Bruna de Freitas Dias, Stella Marinelli Pedrini, Maria Eduarda Slhessarenko Fraife Barreto, Emanuela Zippo, Camila Bonin Pinto, Polyana Vulcano de Toledo Piza, Felipe Fregni

Open access · goldAbstract readReview
In one paragraph

Review in Frontiers in neurology, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 16 papers.

0numbers the graph read from it
0cells of the map it votes in
16citing papers in PubMed
3.3field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

16 citing papers in PubMed, 24 citations in OpenAlex.

  1. Trial
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  11. Spinal Cord Injury and Loss of Cortical Inhibition.International journal of molecular sciences · 2022
    Review
  12. Cortical stimulation for chronic pain: from anecdote to evidence.European journal of physical and rehabilitation medicine · 2022
    Review
  13. Observational
  14. Article
  15. Article
  16. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

10 authors at 3 institutions in 2 countries.

Ludmilla Candido SantosLaboratory of Neuromodulation & Center for Clinical Research Learning, Department of Physical Medicine and Rehabilitation, Harvard Medical School, Spaulding Rehabilitation Hospital, Boston, MA, United States.
Fernanda GushkenFaculdade Israelita de Ciências da Saúde, São Paulo, Brazil.
Gabriela Morelli GadottiFaculdade Israelita de Ciências da Saúde, São Paulo, Brazil.
Bruna de Freitas DiasFaculdade Israelita de Ciências da Saúde, São Paulo, Brazil.
Stella Marinelli PedriniFaculdade Israelita de Ciências da Saúde, São Paulo, Brazil.
Maria Eduarda Slhessarenko Fraife BarretoFaculdade Israelita de Ciências da Saúde, São Paulo, Brazil.
Emanuela ZippoFaculdade Israelita de Ciências da Saúde, São Paulo, Brazil.
Camila Bonin PintoLaboratory of Neuromodulation & Center for Clinical Research Learning, Department of Physical Medicine and Rehabilitation, Harvard Medical School, Spaulding Rehabilitation Hospital, Boston, MA, United States.
Polyana Vulcano de Toledo PizaHospital Israelita Albert Einstein, São Paulo, Brazil.
Felipe FregniLaboratory of Neuromodulation & Center for Clinical Research Learning, Department of Physical Medicine and Rehabilitation, Harvard Medical School, Spaulding Rehabilitation Hospital, Boston, MA, United States.
Harvard University · USHospital Israelita Albert Einstein · BRSpaulding Rehabilitation Hospital · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Phantom limb pain (PLP) affects up to 80% of amputees. Despite the lack of consensus about the etiology and pathophysiology of phantom experiences, previous evidence pointed out the role of changes in motor cortex excitability as an important factor associated with amputation and PLP. In this systematic review, we investigated changes in intracortical inhibition as indexed by transcranial magnetic stimulation (TMS) in amputees and its relationship to pain. Four electronic databases were screened to identify studies using TMS to measure cortical inhibition, such as short intracortical inhibition (SICI), long intracortical inhibition (LICI) and cortical silent period (CSP). Seven articles were included and evaluated cortical excitability comparing the affected hemisphere with the non-affected hemisphere or with healthy controls. None of them correlated cortical disinhibition and clinical parameters, such as the presence or intensity of PLP. However, most studies showed decreased SICI in amputees affected hemisphere. These results highlight that although SICI seems to be changed in the affected hemisphere in amputees, most of the studies did not investigate its clinical correlation. Thus, the question of whether they are a valid diagnostic marker remains unanswered. Also, the results were highly variable for both measurements due to the heterogeneity of study designs and group comparisons in each study. Although these results underscore the role of inhibitory networks after amputation, more studies are needed to investigate the role of a decreased inhibitory drive in the motor cortex to the cause and maintenance of PLP.

Indexed as

cortical silent periodlong intracortical inhibitionphantom limb painshort intracortical inhibitiontranscranial magnetic stimulation

Identifiers

PMID32849197
PMCPMC7406670
OpenAlexW3045663725

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.