Meditation and EEG
This reminded me of a Ken Wilber video from a few months ago where he “stops his brain wave activity”. According to the video post on YouTube:
That’s right, Ken can stop his brainwaves on demand. Actually—and in a more serious vein—this is the famous EEG machine recording where Ken enters various meditative states, one of which is a type of “thoughtless,” “image-less,” or “formless” state, whose correlate is that his brainwaves come to an almost complete stop, as clearly recorded on this portable electroencephalograph (EEG) machine. (This video is discussed in One Taste, April 10 entry.)
Finally, a search on YouTube for “EEG mediation” turned up a few related videos. This particular video “Brain Coherence Measured with Dan Winter” yielded some additional results on Google.