Residual function in motor cortex contralateral to amputated hand.

Abstract:

OBJECTIVE:To investigate residual function of the motor cortex corresponding to the hand of the amputated arm (MCamp). METHODS:Focal transcranial magnetic stimulation (TMS) of MCamp was performed in 10 patients 22 to 52 years after arm amputation to inhibit tonic muscle contraction in the intact hand ipsilateral to cortex stimulation. RESULTS:In all patients, onset latency, degree, and duration of this inhibition were normal. CONCLUSION:The presence of motor inhibition in the residual hand of amputees originating from the hand motor representation of MCamp indicates residual cortical motor representation of the lost hand irrespective of whether the effect is mediated by commissural or ipsilateral corticospinal connections.

journal_name

Neurology

journal_title

Neurology

authors

Röricht S,Meyer BU

doi

10.1212/wnl.54.4.984

subject

Has Abstract

pub_date

2000-02-22 00:00:00

pages

984-7

issue

4

eissn

0028-3878

issn

1526-632X

journal_volume

54

pub_type

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