Ultradian rhythms of alternating cerebral hemispheric EEG dominance are coupled to rapid eye movement and non-rapid eye movement stage 4 sleep in humans Ultradian rhythms of alternating cerebral hemispheric EEG dominance are coupled to rapid eye movement and non-rapid eye movement stage 4 sleep in humans Download Scientific highlights – Volume 2 Issue 4 Uvulopalatopharynogoplasty for obstructive sleep apnea – good and bad news