Richard Davidson flew for a PNAS paper which was published in 2004 around 17 long-term meditation practitioners to his lab and studied their brain waves. This study was performed on request of the Dalai Lama the 14.: https://www.pnas.org/doi/10.1073/pnas.0407401101 The measured gamma waves in the brains of long-term practitioners where so strong that Richard Davidsons group …