title: Comparative recording of the heart beat by ultralow frequency and direct body methods with evidence of their basic clinical identity.
abstract: An attempt has been made to validate the d-v-a modification of the direct body electromagnetic shin bar in the ballistocardiographic evaluation of cardiac function. Its essential mirror reflections of body movements recorded with Ulf have been amply illustrated. A plea is made for a resumption of interest in its wider clinical application within a rigid correlative framework.
mesh_terms: D000328:Adult; D000368:Aged; D001450:Ballistocardiography / Q000379:methods*; D002339:Carotid Arteries / Q000502:physiology; D055590:Electromagnetic Phenomena; D005260:Female; D006331:Heart Diseases / Q000503:physiopathology; D006339:Heart Rate; D006347:Heart Sounds; D006801:Humans; D008297:Male; D008875:Middle Aged; D009200:Myocardial Contraction; D011674:Pulse