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Meg

All articles tagged with #meg

Mindful Dynamics: Two Meditation Styles Drive Distinct Brain States in Expert Monks
neuroscience1 month ago

Mindful Dynamics: Two Meditation Styles Drive Distinct Brain States in Expert Monks

A magnetoencephalography study of twelve highly trained Buddhist monks comparing Samatha (focused attention) and Vipassana (open monitoring) shows meditation reshapes brain dynamics beyond simple gamma increases: after removing non-rhythmic background noise, rhythmic gamma activity declines during both styles and brain signals become more complex and less tied to recent activity. Vipassana nudges the brain toward a critical state and flexible awareness, while Samatha remains more ordered. Hours of practice may align meditative states with resting patterns; a machine-learning classifier could distinguish meditating from resting states. Limitations include small sample size and no control group.

Resting Beta-Wave Signatures Could Foresee Alzheimer's Years Earlier
science2 months ago

Resting Beta-Wave Signatures Could Foresee Alzheimer's Years Earlier

A Brown University-led study using noninvasive magnetoencephalography (MEG) tracked resting brain activity in 85 individuals with mild cognitive impairment and found that those who later developed Alzheimer's showed beta-wave bursts that were shorter, weaker, and less frequent, suggesting a potential early biomarker for progression up to about 2.5 years before diagnosis.