Figure 1From: Altered autonomic nervous system activity as a potential etiological factor of premenstrual syndrome and premenstrual dysphoric disorderComparison of scores on the menstrual distress questionnaire (MDQ) between the follicular and late luteal phases in the Control, PMS, and PMDD groups. Results are expressed as mean ± SE. for each group. ** p < 0.01Back to article page