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<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma
size=2></FONT></DIV><FONT face=Arial color=#0000ff size=2></FONT>From <A
href="http://www.dukenews.duke.edu/news/studies_0304.html">Duke University
News</A>: Research may lead to advances allowing paralyzed people to control
prosthetics by thought. In their first human studies of the feasibility of using
brain signals to operate external devices, researchers at Duke University
Medical Center report that arrays of electrodes can provide useable signals for
controlling such devices. The research team is now working to develop prototype
devices that may enable paralyzed people to operate "neuroprosthetic" and other
external devices using only their brain signals. While the new studies provide
an initial proof of principle that human application of brain-machine interfaces
is possible, the researchers emphasize that many years of development and
clinical testing will be required before such neuroprosthetic devices are
available. Application of such technology would be a robot arm for a
quadriplegic, a neurally controlled electric wheelchair, and another a neurally
operated keyboard, whose output could include either text or speech. Such
devices could help both paralyzed people and those who have lost speech
capabilities. A key question in future clinical studies will be whether humans
can incorporate such devices into their "schema," or neural representation of
the external world.</DIV></BODY></HTML>