ISSN:
1432-1106
Keywords:
Monkey
;
Pyramidal tract neuron
;
Postcentral cortex
;
Motor cortex
;
Electrode sampling bias
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Summary Pyramidal tract neurons (PTNs) were identified in precentral motor cortex (MI) and in postcentral cortex (PoC) of a monkey trained to pronate and supinate its forearm. PTN responses to passive, ramp-form displacements of the forearm were examined in relation to the size of the neuron (as reflected by its antidromic latency). Larger PTNs tended to exhibit transient responses to passive limb displacement, whereas smaller PTNs more frequently showed sustained responses. These findings suggest that smaller PTNs, that make up the majority of the total PTN population, receive continuous feedback during posture as well as during the dynamic phase of movement.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00235829
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