Richard Davison found the highest levels of gamma wave activity in the left-perfrontal cortex of olympic level meditators such as Mingyur Rinpoche: He has published this in this paper: https://www.pnas.org/doi/full/10.1073/pnas.0407401101 And now Richard Davidson explains us that a daily practice of meditation of 20 min. can change our brains in an objectively measurable way: But …