title: Psychophysiological reactions in twins.
mesh_terms: D000293:Adolescent; D000328:Adult; D004562:Electrocardiography; D004576:Electromyography; D005260:Female; D005712:Galvanic Skin Response; D006321:Heart / Q000502:physiology*; D006339:Heart Rate; D006439:Hemodynamics; D006801:Humans; D009132:Muscles / Q000502:physiology*; D011247:Pregnancy; D011603:Psychophysiology; D012119:Respiration; D014427:Twins