As a part of my work, I visit manufacturers of electronic equipment in my territory. It was in this manner that I learned about some new equipment being developed at Washington University in Saint Louis, MO, that allows a hole to be drilled in one's brain with minimal damage. A one page technote on this device was published in Scientific American for August, 1996, and it might be of interest to many. The URL for this article is: http://www.sciam.com/0896issue/0896techbus01.html Art Hirsch [log in to unmask] Lewisvile, TX