Psychophysiology and sinus arrhythmia.
D001049:Apnea / Q000503:physiopathology; D001146:Arrhythmia, Sinus / Q000503:physiopathology*; D003201:Computers; D004562:Electrocardiography; D006334:Heart Function Tests; D006339:Heart Rate; D006801:Humans; D008722:Methods; D011603:Psychophysiology; D012119:Respiration; D012894:Sleep Stages; D013312:Stress, Physiological / Q000503:physiopathology; D013997:Time Factors