Large magnitude heart rate changes in subjects instructed to change their heart rates and given exteroceptive feedback.
D000328:Adult; D005246:Feedback; D006339:Heart Rate; D006801:Humans; D008297:Male; D009043:Motor Activity; D009119:Muscle Contraction; D012119:Respiration; D011984:Sensory Receptor Cells / Q000502:physiology