Fig. 6.
The integral values of oxy-Hb during the N-back task
Comparison of the integral value of oxy-Hb during the n-back task in the PMS and Non-PMS groups at FP and LP (Mann-Whitney U test). The data are shown as the mean and error bars are standard error. FP, follicular phase; LP, luteal phase; PMS, premenstrual syndrome.