Inhibition evoked from the region of the caudate nucleus in cats.

Mosfeldt Laursen, A. Inhibition evoked from the region of the caudate nucleus in cats. Acta physiol. scand. 1962. 54. 185–190. – Inhibition was studied in cats trained to perform an escape or avoidance jump. Immediate arrest of movement could be elicited with low intensity when stimulating through adjacent lead pairs of a 14 lead electrode situated in the internal capsule. The cat could be “frozen” in any phase of a hurdle passage. With lead pairs in the caudate arrest of movement could only be elicited with higher intensity of stimulation, the threshold increasing with increasing distance from the internal capsule. Similarly, muscle action potentials evoked by stretch or by cortical stimulation in anesthetized and encephale isole cats were only inhibited when stimulating through lead pairs situated in the internal capsule. Thus, there was no evidence of an inhibitory effect of caudate origin.

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