title: Large magnitude voluntary heart rate changes.
mesh_terms: D000293:Adolescent; D000328:Adult; D003216:Conditioning, Operant; D005108:Extinction, Psychological; D005246:Feedback; D005260:Female; D006321:Heart / Q000502:physiology; D006339:Heart Rate; D006801:Humans; D008297:Male; D009042:Motivation; D011214:Practice, Psychological; D012119:Respiration