Abstract
A psychophysiological change during the menstrual cycles was investigated using the menstrual distress questionnaire, power spectral analysis of electroencephalography, dichotic listening test and tapping test. The complaints were the least frequent in the intermenstrual phase and the most frequent in the menstrual phase. On power spectral analyses of electroencephalography the relative alpha 3 power was significantly higher in F 3,P 3,P 4,O 1 and O 2 at the premenstrual phase compared with that at the menstrual stage. The relative theta 2 wave in T 3 was significantly higher at the menstrual phase compared with that at the intermenstrual phase. The relative theta 2 wave in O 2 was significantly higher at the premenstrual phase compared with that at the intermenstrual phase. However, there was no change during the menstrual cycle in dichotic listening test and tapping test.
