Change the pH of your spit... using your mind!

[Jonathan]

http://www.mindhacks.com/blog/2007/08/l ... the_b.html

They trained the woman to change the acidity of her spit by imagining either the taste of lemon, or the taste of milk.

Say what?

Seems like there's a video game where kids win the game by learning to concentrate. Surely that technology could have been harnessed without patient consent to give her a viable noninvasive means of communication.