Antoine Lutz and his colleagues at the W. M. Keck Laboratory for Functional Brain Imaging and Behavior at the University of Wisconsin studied Tibetan monks who had experienced at least ten thousand hours of meditation. They found that meditators self-induce sustained high-amplitude gamma-band oscillations and global phase-synchrony, visible in EEG recordings made while they are meditating.9 The high-amplitude gamma activity found in some of these meditators seems to be the strongest reported in the scientific literature.
