Figure 3From: Altered autonomic nervous system activity as a potential etiological factor of premenstrual syndrome and premenstrual dysphoric disorderComparison of Total power and high frequency (HF) power between the follicular and late luteal phases among the Control, PMS, and PMDD groups. Results are expressed as mean ± SE. for each group. p < 0.05 (follicular vs. luteal phases) [star] ; p < 0.05 (Control & PMS group vs. PMDD group) [yellow arrow].Back to article page