Psychosomatic Medicine Faster Service from Outside North America
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Fig. 1. Group differences (analysis of covariance) for all-night power in (A) HF band and (B) LF:HF ratio. Mean values are adjusted for ambient stress at baseline and wakefulness during sleep. HF power is represented as milliseconds squared/hertz, and LF:HF ratio is represented as the ratio of LF to HF spectral power. Error bars represent SD. *p < .05.





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