...In 1975, in the USA, a military experiment was published where pulsed microwaves produced, in the brain of a human subject, an audio perception of numbers from 1 to 10...[/b]
this quote was taken fromhttp://istina.rin.ru/eng/ufo/text/360.html

it mentions lights and sounds being able to affect the brain, the way brainwave generator works. evidentally the russians had known about this, it talks of their experiment called "radioson" where sleep was induced using radio waves. This could be saving grace for people suffering from insomnia, yet the same tech can be used to make people hear voices in their heads, causing humans to beleive themselves mentally ill. Sony has patents pending on devices using ultrasound that can simulate video games in peoples mind http://www.news.com.au/story/0,10117,12780...3-13762,00.html

I myself would like to try sony's idea

more reading http://www.aisjca-mft.org/braindist.htm

i ran a google search for the russian "radioson" experiments, hoping to find information to construct a device that would promote sleep, without disrupting sleep, (like the brainwave gnerator does with its annoying sounds), no luck, just a whole bunch of sites written in languages that i cant read