more information
Thought I'd share this article over at boingboing, for those interested in more on the topic: http://www.boingboing.net/2008/01/24/history-of-trepanati.html
It links further on to:
http://scienceblogs.com/neurophilosophy/2008/01/an_illustrated_history _of_trep.php
http://www.boingboing.net/trepan.html
http://trepan.com/
Godspeed!
-mayor of crack