Very interesting. I believe the military/cia has things like this they are researching, I recall some stories about it.
Imagine if such a device could be shrunk so it was only in like a head-band. People with various mental disorders would profit infinitely if more was known.
Once I get some time I will try to look up some papers on it. That link was big on description, but short on science.
lol - he was a draft doger too. :)