In this study we investigated the role of proprioception in the control of prehension movements, with particular reference to the grasp component.

In the grasp perturbation experiment a mechanical perturbation was applied to the fingers during prehension movements, again executed with and without visual feedback.

To this purpose we studied the kinematics of prehension movements in a patient with a right parietal lesion and in six right-handed healthy control subjects.

Prehension movements of the right hand were recorded in normal subjects using a computerized motion analyzer.