[Technic for counting cardiac oscillations in plethysmographic studies].
D006339:Heart Rate / Q000295:instrumentation*; D010827:Physiology / Q000295:instrumentation*; D010991:Plethysmography / Q000295:instrumentation*
K metodike podscheta serdechnykh ostsilliatsiĭ pri pletizmograficheskikh issledovaniiakh.