[Neuroautonomic organization of cardiac rhythm and of nonrhythmic oscillations in the frequency of cardiac contractions and respiration].
In 25 chronic adult rabbits, the functional organization of neurally mediated short-term rhythms and patterns of the heart rate (HR) were investigated. The respiration-unrelated arrhythmia seems to be vagally mediated only, being abolished with atropine. The respiration-related arrhythmia exists not only within the range of respiratory frequency but also in lower frequencies as discovered by spectral and coherence analysis. During motor activity, there is a systematic correlation among increasing premotor, motor and amygdaloid multispike activities, increasing HR and depressed HR-rhythms with limbic initiation of motor and concomitant autonomic patterns, "Immobile confrontations" alone produces vagally induced HR-decrease and increased amplitudes of vagal HR-rhythms with a concomitant cortical multispike depression, a mirror image of the autonomic patterns after nociceptive stimulation.
U
U
Zwiener
A
A
Richter
N P
NP
Schumann
S
S
Glaser
H
H
Witte
D000200:Action Potentials; D000818:Animals; D001285:Atropine; D001340:Autonomic Nerve Block; D001341:Autonomic Nervous System / Q000502:physiology*; D001794:Blood Pressure; D004562:Electrocardiography; D004576:Electromyography; D005073:Evoked Potentials, Somatosensory; D005260:Female; D006339:Heart Rate; D008297:Male; D010507:Periodicity; D011224:Prazosin; D011433:Propranolol; D011817:Rabbits; D012119:Respiration
D001285:Atropine; D011433:Propranolol; D011224:Prazosin
Neĭrovegetativnaia organizatsiia serdechnykh ritmov i neritmichnykh kolebaniĭ chastoty serdechnykh sokrashcheniĭ i dykhaniia.