Effects of meditation on brain electrical activity

Author(s): GrinbergZylberbaum, J., Perez, M. A. G., Ortiz, C. A., Loyo, J. R.

Journal/Book: Rev Mex Psicol. 1999; 16: Apartado Postal 22-211, Tlalpan 14000, Mexico. Sociedad Mexicana Psicologia. 101-115.

Abstract: The aim of this work was to study the changes on different parameters of brain electrical activity (EEG) produced by a 4 moth Autoallusive meditation training during two experimental conditions, rest and concentration in respiration, in nonexperienced subjects. EEG of 8 meditation trained (EG) and 8 control (CG) subjects was recorded during rest (BL) and during concentration on respiration before and after the training. In the EG vs CG: absolute power decreased, alpha2 relative power increased during concentration and alpha2 interhemispheric correlation increased during BL, from pre to post-training. In both groups: alpha1 relative power increased on Bt on the post-training; alpha2 interhemispheric correlation was higher during concentration. Changes in the experimental group could be interpreted as a higher alert and more relaxed state, with higher functional sinchronization between cerebral hemispheres, produced by meditation training.

Note: Article Loyo JR, Univ Guadalajara, Inst Neurociencias, Rayo 2611, Guadalajara 44520, Jalisco, MEXICO

Keyword(s): meditation; EEG; spectral analysis; correlation; TRANSCENDENTAL-MEDITATION; STRESS REDUCTION; SELF-ACTUALIZATION; SLEEP-DEPRIVATION; ANXIETY DISORDERS; EEG POWER; RESPONSES; MEDIATION; PROGRAM; ADJUSTMENT

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