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Cophase and complex coherence. (A) Cophase between trunk and leg segments, (B) complex coherence of shaded region in (A) between trunk and leg segments, (C) cophase between weighted hip EMG and weighted ankle EMG, (D) complex coherence of shaded region in (C) between weighted hip EMG and weighted ankle EMG. Ellipses of complex plane represent 95% confidence region in the complex plane.
