Years ago I answered an ad in a San Diego paper that was asking for volunteers to take part in a biofeedback experiment. I volunteered. In the lab they wired up my forehead with those stick on sensors and those sensors were plugged into a small box with some electronics inside. The box in turn was hooked to an Apple II+. The Apple II+ should tell you how long ago this was.
Anyway, when he turned the machine on, the screen was totally blue. He told me to unclench my jaw and basically start relaxing and keep watching the screen. It took literally seconds and the blue started to reduce from the top of the screen down. Before you knew it, the upper half of the screen was black or blank. I could tense my jay and think of problems in my life and the screen started to get blue again.
I am trying to design such a unit and would appreciate any comments especially if anyone has had any of the same experiences.
John
