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Meditation states and traits: EEG, ERP, and neuroimaging studies.

B Rael Cahn, John Polich

Psychological Bulletin March 2006 DOI: 10.1037/0033-2909.132.2.180 (opens in new tab)

Study at a glance

AI-extracted from the abstract
Characteristics Review Peer reviewed
Intervention Meditation
Topics Meditation
Key findings The review reports that meditation is associated with overall EEG slowing, theta and alpha activation related to practice proficiency, changes in some sensory evoked potential components, altered attentional allocation on cognitive event-related potentials, and increased regional cerebral blood flow. The authors conclude meditation appears to involve the anterior cingulate cortex and dorsolateral prefrontal areas, and that neurophysiological state and trait effects are variable but beginning to show consistent outcomes.

Abstract

Neuroelectric and imaging studies of meditation are reviewed. Electroencephalographic measures indicate an overall slowing subsequent to meditation, with theta and alpha activation related to proficiency of practice. Sensory evoked potential assessment of concentrative meditation yields amplitude and latency changes for some components and practices. Cognitive event-related potential evaluation of meditation implies that practice changes attentional allocation. Neuroimaging studies indicate increased regional cerebral blood flow measures during meditation. Taken together, meditation appears to reflect changes in anterior cingulate cortex and dorsolateral prefrontal areas. Neurophysiological meditative state and trait effects are variable but are beginning to demonstrate consistent outcomes for research and clinical applications. Psychological and clinical effects of meditation are summarized, integrated, and discussed with respect to neuroimaging data.

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