Instrument of Control
From: Technology Review - 12/2011 - page 86
By: Erica Naone

Belts of electrodes can control muscles in the forearm to help a beginner
play a musical instrument. 

Researchers at the University of Tokyo have built a system they call
PossessedHand that electrically stimulates ­muscles in the forearm at
strategic moments to nudge beginners as they play a traditional Japanese
instrument called the koto. One of the researchers, Emi Tamaki, says that
people who used the technology were much better at playing the proper rhythm
and made fewer mistakes. The prototype system is rudimentary and clunky, but
its creators believe it could point the way toward machines that help people
acquire other skills quickly and easily.  

Read the abstract at:
http://www.technologyreview.com/computing/38837/

Links:
PossessedHand: Techniques for controlling human hands using electrical muscles
  stimuli (with video 1:14)
http://lab.rekimoto.org/projects/possessedhand/

Emi Tamaki
http://lab.rekimoto.org/members-2/emi/