An eight week study conducted by Harvard researchers at Massachusetts General Hospital (MGH), for example, determined that meditation literally rebuilds the brain’s grey matter in just eight weeks. It’s the very first study to document that meditation produces changes in grey matter over time.
In another study, researchers led by Richard Davidson, a neuroscientist at the W.M. Keck Laboratory for Functional Brain Imaging and Behavior, teamed up with a number of monks and volunteers. The Dalai Lama even dispatched eight of his most accomplished practitioners to Davidson’s lab to have them hooked up for EEG testing and brain scanning. These monks come from traditions of meditation for an estimated 10,000 to 50,000 hours, over time periods of 15 to 40 years.
The monks were fitted with a net of 256 electrical sensors and asked to meditate for short periods. Davidson was particularly interested in measuring gamma waves, the highest frequency and most important known electrical brain impulses. The results showed that the electrodes picked up much greater activation of fast moving and unusually powerful gamma waves in the monks.
One aspect of meditation that needs to be addressed more, however, is the fact that it’s a state of mind. There are those out there who can achieve similar brain wavelengths by putting themselves in the same ‘state of mind’ as a ‘master meditator.’ This proves that there is no one way to do it, and that it’s possible to achieve alternate states of consciousness as well as reap the other benefits associated with meditation without doing it a certain way or the ‘right’ way.