Human anterior and frontal midline theta and lower alpha reflect emotionally positive state and internalized attention: high resolution EEG investigation of meditation

LI Aftnas, SA Golcheikeine

Neuroscience Letters 310 (2001) 57-60

EEG spectral power and coherence estimates in the individually defined delat, theta, alpha-1, alpha-2 and alpha-3 bands were used to identify and characterize the brain regions involved in meditative states , in which focused internalisatized attention gives rise to emotionally positive “blissful” experience. Blissful state was accompanied by increased anterior frontal an dmidline theta sychronisation as well as enhanced theta long distant connectivity between prefrontal and posterior association cortex with distinct centre of gravity in the left prefrontal region (AF3 site). Subjective scores of emotional experience significantly correlated with theta, whereas scores of internalized attention with both theta and alpha lower synchronization. Our results propose selective associations of theta and alpha oscillating networks activity with states of internalized attention and positive emotional experiences.