doug nelson: DISENGAGE!

N. N. Das and H. Gastaut studied seven Indian yogis, who registered no muscular electrical activity during periods of complete immobility though their heart rates accelerated in almost perfect parallel with accelerations of their brain waves during moments of ecstasy. The most accomplished among these seven subjects, moreover, exhibited “progressive and very spectacular modifications” in their EEG records during their deepest meditations, including recurrent beta rhythms of 18-20 cycles per second in the Rolandic area of the brain, a generalized fast activity of small amplitude as high as 40-45 cycles per second with occasional amplitudes reaching 30 to 50 microvolts, and the reappearance of slower alpha waves after samadhi, or ecstasy, ended.