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. 2013 Apr 24;8(4):e59780. doi: 10.1371/journal.pone.0059780

Figure 2. Resolution of Emotion Conflict differs according to menstrual cycle phase.

Figure 2

Top panel: Scatter plots show individual differences in reaction time (sec) between the incongruent and congruent condition of the emotional Stroop task in the follicular and the luteal cycle phase in all subjects (mean reaction time shown in black). These data indicate a significant increase (p = 0.001) in mean reaction time for resolving emotional conflict between the follicular and the luteal cycle phase in all subjects. Bottom panel: Boxplots-bars show mean differences in reaction time (sec) between the incongruent and congruent condition of the emotional Stroop task in the follicular and the luteal cycle phase split by subject group (dark grey  =  PMS group, light grey  =  control group). Whiskers represent minimum and maximum of data-range. On average, the PMS group tended to show a faster mean reaction time compared to the control group (follicular phase: PMS group mean ± SD  = 0.02±0.02 sec, Control group mean ± SD  = 0.03±0.02 sec; luteal phase: PMS group mean ± SD  = 0.04±0.03 sec, Control group mean ± SD  = 0.05±0.03 sec), however, overlap exists and this difference is not significant (follicular phase: p = 0.17; luteal phase: p = 0.19).