Sensory Feedback System for a Prosthetic Hand
From: NASA Tech Briefs Insider - Medical Design - 10/12/2009

The Army Research Lab (ARL) has developed a sensory feedback system for a
myoelectrically controlled biomimetic prosthetic hand. The human
neuromuscular control system enables sensory feedback via stimulus frequency
changes. The system would help amputees execute fine tasks or handle delicate
objects easily. 

Read the entire article at:
http://www.techbriefs.com/component/content/article/5746
http://www.defensetechbriefs.com/component/content/article/2182