title: RESPIRATORY SINUS ARRHYTHEMIA: A FREQUENCY DEPENDENT PHENOMENON.
mesh_terms: D001146:Arrhythmia, Sinus; D001145:Arrhythmias, Cardiac; D004562:Electrocardiography; D006321:Heart; D006339:Heart Rate; D006801:Humans; D010827:Physiology; D011674:Pulse; D012119:Respiration
keywords: ARRHYTHMIA, SINUS; ELECTROCARDIOGRAPHY; HEART; PHYSIOLOGY; PULSE; RESPIRATION