Recurrent Hypersomnia and Autonomic Dysregulation in Posttraumatic Stress Disorder Recurrent Hypersomnia and Autonomic Dysregulation in Posttraumatic Stress Disorder Download Sleep Apnea and Nocturnal Cardiac Arrhythmia: Understanding Differences Across Ethnicity A 76 Year-Old Woman with Sleep and Waking Stridor, Sleep Talking, Orthostatic Hypotension, and Imbalance