Quantitative change of EEG and respiration signals during mindfulness meditation.
Author: Ahani A, Wahbeh H, Nezamfar H, Miller M, Erdogmus D, Oken B1.
Affiliation:
1Department of Neurology, Oregon Health and Science University, Portland, OR, USA. oken@ohsu.edu.
Conference/Journal: J Neuroeng Rehabil.
Date published: 2014 May 14
Other:
Volume ID: 11 , Issue ID: 1 , Pages: 87 , Special Notes: doi: 10.1186/1743-0003-11-87 , Word Count: 176
BACKGROUND:
This study investigates measures of mindfulness meditation (MM) as a mental practice, in which a resting but alert state of mind is maintained. A population of older people with high stress level participated in this study, while electroencephalographic (EEG) and respiration signals were recorded during a MM intervention. The physiological signals during meditation and control conditions were analyzed with signal processing.
METHODS:
EEG and respiration data were collected and analyzed on 34 novice meditators after a 6-week meditation intervention. Collected data were analyzed with spectral analysis, phase analysis and classification to evaluate an objective marker for meditation.
RESULTS:
Different frequency bands showed differences in meditation and control conditions. Furthermore, we established a classifier using EEG and respiration signals with a higher accuracy (85%) at discriminating between meditation and control conditions than a classifier using the EEG signal only (78%).
CONCLUSION:
Support vector machine (SVM) classifier with EEG and respiration feature vector is a viable objective marker for meditation ability. This classifier should be able to quantify different levels of meditation depth and meditation experience in future studies.
PMID: 24939519
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