Michael M. Butler wrote:
> Suggestion: try a Dogpile search on "Russian sleep", "elektroson" and
> Soviet experimenters ballyhooed this back in the 60s. The idea was to use
> electrodes fixed on the eyelids and behind the ears to induce relaxed
> (correlated with alpha or theta brainwaves) states. It's possible that
> there was some entrainment effect due to e.g. phosphenes (the "lights"
> sometimes seen when one rubs one's eyes).
> Reported results by Western researchers through around 1973 were mixed and
Current versions of these machines are being marketed through "Tools for Exploration".
You have to wade through a lot of crap at this "Tools for Exploration" site but I think there are a few useful items. And after all, they *are* promoting items alleged to enhance and extend our natural human limits. They're main page is: