Abstract
Three male dextral patients with CT-verified parietal lobe damage exhibited cortical sensory syndrome and sensory extinction. Two had hemianesthesia and optic ataxia. In all three, motor weakness was minimal, while finger movement and performance of motor tasks were severely impaired. The three patients were unable to execute explorative movements correctly. The "motor" and "oculomotor" circuits, the two major basal ganglia-thalamocortical pathways could he implicated. Twelve weeks after ictus, all three patients had partial return of stereognosis. The two patients with hemianesthesia showed partial return of sensation, which thereafter remained unchanged in one to two years. Two improved to a level of manipulative movements, judged to be functional in an assistive environment, and the third improved to a functional level independent of assistance by twelve weeks.