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Differential voluntary programming of fingers extensor commands revealed by non-invasive transcranial magnetic stimulation of the human brain.

Abstract：

:Slightly suprathreshold magnetic stimuli were delivered over the left scalp while a normal human subject attended a sensory signal which called for a motor response of right fingers in a reaction time paradigm. The cortico-motoneuronal systems of the two muscles producing finger extension disclosed a remarkable physiological differentiation. Brain magnetic stimulation delivered just before the subject's motor response revealed cortico-motoneuronal facilitation for one extensor muscle and concomitant inhibition for the other, depending on the verbal instructions that had been given to the subject before the experimental trial. Thus, during the planning of specific finger manipulatory activities, the motor brain systems can achieve significant contrast in the membrane excitatory states of the motor cortical pyramidal neurones, even for synergic muscles.

journal_name

Neurosci Lett

journal_title

Neuroscience letters

authors

Tomberg C

doi

10.1016/0304-3940(94)11220-d

subject

Has Abstract

pub_date

1995-02-06 00:00:00

pages

41-3

issue

1

eissn

0304-3940

issn

1872-7972

pii

030439409411220D

journal_volume

185

pub_type

杂志文章

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