N. GRACILIS OF CAT. FUNCTIONAL ORGANIZATION AND CORTICOFUGAL EFFECTS

Abstract
Using microelectrodes single units were identified and studied following physiological and peripheral electrical stimulation and their activity was tested alter a conditioning stimulation of the motor cortex. Differences were found in the receptive field sizes of pre and post synaptic units, and in the nuclear distribution of cells activated by specific physiological stimuli, corticofugal stimulation and repetitive peripheral stimulation. It is suggested that the rostral portion of the nucleus is functionally different from the medial and caudal portions.

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