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. Author manuscript; available in PMC: 2013 Oct 1.
Published in final edited form as: J Sleep Res. 2012 Mar 14;21(5):535–545. doi: 10.1111/j.1365-2869.2012.01007.x

Figure 1.

Figure 1

Spectral EEG power in NREM sleep for women with severe PMS and controls during the Late-luteal phase of the menstrual cycle, expressed relative to values in the Follicular phase (horizontal line). Hz bins are identified by their lower boundary values. The horizontal bar at the bottom of the figure indicates significant menstrual phase effects (ANOVA, P<0.05).