brain activity and affect: overall and asymmetric activity of the brain lobes in affective states

background : studies have emphasized on the frontal eeg  symmetry as a mediator of emotional states. this research was aimed to examine the overall and asymmetric activities of the brain lobes under the affective states. methods : a coupling eeg was recorded in an eye closed awakened condition from 40 right handed female students under the baseline and affective states. results : bilaterally decreased activities in anterior and posterior regions and also a superimposed right asymmetry in posterior regions were revealed. conclusions : variability of frontal, temporal and parietal lobes together with a superimposed relative right posterior activity may mediate affective states. keywords : brain activity, brain lobes, asymmetry, affect.