Effect of inactivation of sensomotor cortical function by cold on unit activity in the head of the caudate nucleus.

Abstract

Experiments with extirpation, cold inactivation, and electrical stimulation of the sensomotor cortex have demonstrated the existence of inhibitory influences of this structure on general motor activity and on various behavioral acts in animals [3, 4, 8]. Inhibitory influences of functional cold inactivation of the sensomotor cortex on spontaneous unit activity in the parietal cortex were demonstrated by the writer previously [1]. There is neurophysiological and morphological evidence of connections of this part of the neocortex with the caudate nucleus and, in particular, with its head [2]. It was interesting to study the effect of inactivation of the sensomotor cortex on spontaneous and evoked unit activity in the head of the caudate nucleus.