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Marc Cohen

2 papers in the library · 70 citations · publishing 2012-2014

Papers

A Methodological Review of Meditation Research

Frontiers in Psychiatry July 1, 2014 John W. Thomas, Marc Cohen 70 citations

After more than 50 years of research, no clear neurophysiological signatures have been found for states of consciousness induced by meditation practices. The failure is largely due to the narrow range of variables examined, with most studies focusing only on correlations between neurophysiological measures and specific practices while ignoring content and context. The authors argue that more meaningful results require expanding the methodological paradigm to include the cultural setting, the meditator's life situation, details of the practice, and the meditator's state of consciousness. Including all these domains will improve predictions of psychophysiological variables associated with specific meditation states and help explore the mysteries of human consciousness.

Source localisation of cortical oscillation differences in Yoga meditation between medium and advanced level practitioners

Frontiers in Human Neuroscience January 1, 2012 Marc Cohen

Advanced meditators (mean 30 years' experience) showed higher current source density in high-frequency EEG bands, predominantly in the right temporal lobes, insula, and inferior frontal gyrus, compared to medium-level practitioners (mean 4 years' experience). The medium group had higher current source density in lower frequencies in the right occipital and temporal lobes, precentral gyrus, and superior frontal gyrus. Distinct right-lateralized networks were identified for low and high frequency bands, suggesting that meditation expertise is associated with specific changes in cortical oscillation patterns.