Journal
BIOLOGICAL PSYCHOLOGY
Volume 135, Issue -, Pages 65-75Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.biopsycho.2018.03.004
Keywords
Vipassana meditation; EEG; Permutation entropy; Fractal dimensions; Neural plasticity
Funding
- Cognitive Science Research Initiative, Department of Science & Technology (DST-CSI), Government of India, New Delhi [SR/CSI/63/2011]
- Science and Technology of Yoga and Meditation, Department of Science & Technology (DST-SATYAM), Government of India, New Delhi [SR/SATYAM/18/2015]
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Meditation, as taught by most schools of practice, consists of a set of heterogeneous techniques. We wanted to assess if EEG profiles varied across different meditation techniques, proficiency levels and experience of the practitioners. We examined EEG dynamics in Vipassana meditators (Novice, Senior meditators and Teachers) while they engaged in their traditional meditation practice (concentration, mindfulness and loving kindness in a structured manner) as taught by S.N. Goenka. Seniors and Teachers (vs Novices) showed trait increases in delta (1-4 Hz), theta-alpha (6-10 Hz) and low-gamma power (30-40 Hz) at baseline rest; state-trait increases in low-alpha (8-10 Hz) and low-gamma power during concentrative and mindfulness meditation; and theta-alpha and low-gamma power during loving-kindness meditation. Permutation entropy and Higuchi fractal dimension measures further dissociated high proficiency from duration of experience as only Teachers showed consistent increase in network complexity from baseline rest and state transitions between the different meditation states.
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