Paresthesia in a Rhesus Monkey Associated with a Thalamic Lesion, and its Alleviation by Postcentral Cortical Excision

Abstract
Bilateral, apparently painful paresthesias lasting 14 weeks were observed in a rhesus monkey following a small lesion containing alumina cream, centered on the centromedian thalamic nucleus of one side. After bilateral excision of the cerebral cortex posterior to the central sulci, the symptoms were somewhat alleviated during the final 4 weeks of observation. Excision of the parietal cortex unilaterally produced contralateral hypotonus.