The Maharishi Mahesh Yogi, trained as a physicist, welcomed, encouraged Western science to validate Transcendental Meditation, a mechanical mantra repetition technique, with the stress on lack of effort which is opposed to mindfulness, concentration, self-observation, and other effortful techniques.<p>Electro-encephalographs of TM meditators, after just a few weeks of initiation into TM technique, show the various brain waves frequencies spreading from back to front, plus left-right hemispheric synchrony, and increasing in amplitude. This behaviour was seen a few decades ago, and is even more verified lately as detectors and signal processing advanced.<p>Was do the data mean? That's less "scientific", but clearly something is happening, and subjective reports are that it's a very positive experience with benefits that last outside of meditation.<p>Why does this behavior persist, is repeatable across many TM meditators, even neophyte meditators? It suggests, verifies even, that the TM technique recognizes inherent properties, abilities, behavior of the human brain.<p>Again, the benefits, if any, meditative sessions causing whole-brain wave synchrony, coherence, and increased wave amplitude? You'll have to ask TM meditators.