Adequacy of the residual sensory cues for psychomotor performance of arm amputees

In a subject X treatment design 6 manipulation and/or tracking conditions were administered to 20 nonamputees and 15 unilateral amputees. Findings from the 2 visual motor tasks indicate all Ss received adequate pressure cues, all showed loss of response speed if gross movements with the prosthesis was required, and performance breakdown and confusion under additional task complexity.