alexa Long-term meditators self-induce high-amplitude gamma synchrony during mental practice.
Psychiatry

Psychiatry

Journal of Addiction Research & Therapy

Author(s): Lutz A, Greischar LL, Rawlings NB, Ricard M, Davidson RJ

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Abstract Practitioners understand "meditation," or mental training, to be a process of familiarization with one's own mental life leading to long-lasting changes in cognition and emotion. Little is known about this process and its impact on the brain. Here we find that long-term Buddhist practitioners self-induce sustained electroencephalographic high-amplitude gamma-band oscillations and phase-synchrony during meditation. These electroencephalogram patterns differ from those of controls, in particular over lateral frontoparietal electrodes. In addition, the ratio of gamma-band activity (25-42 Hz) to slow oscillatory activity (4-13 Hz) is initially higher in the resting baseline before meditation for the practitioners than the controls over medial frontoparietal electrodes. This difference increases sharply during meditation over most of the scalp electrodes and remains higher than the initial baseline in the postmeditation baseline. These data suggest that mental training involves temporal integrative mechanisms and may induce short-term and long-term neural changes.
This article was published in Proc Natl Acad Sci U S A and referenced in Journal of Addiction Research & Therapy

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