Topography of excitatory and inhibitory muscle responses evoked by transcranial magnetic stimulation in the human motor cortex. Academic Article uri icon

Overview

abstract

  • Transcranial magnetic stimulation of the motor cortex produces a motor-evoked potential (MEP) in the electromyogram followed by a silent period (SP) which is thought to be due to cortical inhibition. In this study, the topography and size of the cortical areas from which an MEP and SP are evoked in the abductor pollicis brevis muscle (APB) of the hand were compared. The SP area was found to be large, encompassing and surrounding the MEP area. These findings infer the existence of an inhibitory surround limiting the excitatory area for APB in the human motor cortex.

publication date

  • May 14, 1993

Research

keywords

  • Motor Cortex
  • Muscles
  • Transcranial Magnetic Stimulation

Identity

Scopus Document Identifier

  • 0027198715

Digital Object Identifier (DOI)

  • 10.1016/0304-3940(93)90169-l

PubMed ID

  • 8361648

Additional Document Info

volume

  • 154

issue

  • 1-2