EEG dynamics of experienced Zen meditation practitioners probed by complexity index and spectral measure
Journal of Medical Engineering & Technology 2009 DOI: 10.1080/03091900802602677 (opens in new tab)
Study at a glance
AI-extracted from the abstract| Characteristics | Observational cohort Peer reviewed |
|---|---|
| Sample size | 46 |
| Population | Experienced Zen meditation practitioners and matched controls |
| Intervention | Zen meditation |
| Duration | 40-minute meditation session |
| Topics | Buddhism Meditation |
| Citations | 75 |
| Key findings | Zen meditation practitioners showed increased frontal alpha-1 and occipital beta power and higher brain complexity compared to controls, with effects strengthening over time. |
Abstract
Changes in the electroencephalogram (EEG) characteristics in experienced Zen meditation practitioners (n = 23) during 40 minutes of meditation were compared with those in the matched controls (n = 23) taking a rest for 40 minutes. Averaged complexity index ([image omitted] ) evaluation and spectral analysis were measured in three intervals: the first, middle and the last 5-min segments of Zen meditation or relaxing rest. Significant increase in frontal alpha-1 (8-10 Hz) and occipital beta power was found during meditation as compared with the EEG under the rest, whereas an average increase of theta power was observed in the controls. In meditation, brain dynamics exhibited high [image omitted] , which correlated with more beta activity. Control subjects showed no significant change in [image omitted] level. This distinction became more significant during the last 5 minutes of meditation over most electrodes. Deeper meditation state has been reported as having implications of increased beta power that can be more prominent by the approach of [image omitted] estimation. Our results substantiate the idea that long-term training with Zen-Buddhist meditation induces changes in the electro-cortical activity of the brain.