Papers Published

1. Walker, Cedric F. and Lockhead, Gregory R. and Markle, David R. and McElhaney, James H., PARAMETERS OF STIMULATION AND PERCEPTION IN AN ARTIFICIAL SENSORY FEEDBACK SYSTEM., Journal of Bioengineering, vol. 1 no. 3 (1977), pp. 251 - 260 .
   (last updated on 2007/04/16)

   Abstract:
   Providing sensory feedback to amputees through electrical stimulation of a peripheral nerve is promising technology. More than a dozen upper limb amputees are already using implanted force proprioception systems which measure grasping force at the prosthesis and stimulate the median nerve with an electrical signal correlated with that force. The relationships between stimulus parameters and perceptions in a prosthetic feedback system were measured using psychophysical methods. Electrical stimulation of the median nerve produced a monotonic relation between frequency of stimulation and the perceived magnitude of the stimulus. There were two qualitatively different percpetions of the stimulation; one for low frequencies and one for high. These two qualitites fit different psychophysical continuua, kind of stimulation, and amount of stimulation.

   Keywords:
   BIOMEDICAL ENGINEERING - Neurophysiology;SENSORY AIDS - Applications;