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Multiple firing of motoneurones is produced by cortical stimulation but not by direct activation of descending motor tracts.

Author information

1
Dipartimento di Scienze Neurologiche, Università di Roma La Sapienza, Italy.

Abstract

In the present report we have tested whether stimulation of the motor descending tracts at the brain-stem level could set up repetitive motor unit discharges in a similar manner to that described for motor cortical stimulation. We have seen that a large descending motor volley, evoked by brain-stem stimulation, cannot produce repetitive firing of motor units. Repetitive motoneurone firing is therefore produced by multiple excitatory volleys set up by single cortical shocks.

PMID:
1710974
DOI:
10.1016/0168-5597(91)90078-c
[Indexed for MEDLINE]

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