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Titolo:
2 DISTINCT MECHANISMS GENERATE THE RESPIRATORY MODULATION IN FIBER ACTIVITY OF THE RAT CERVICAL SYMPATHETIC TRUNK
Autore:
HABLER HJ; BARTSCH T; JANIG W;
Indirizzi:
CHRISTIAN ALBRECHTS UNIV KIEL,INST PHYSIOL,OLSHAUSENSTR 40 D-24098 KIEL GERMANY
Titolo Testata:
Journal of the autonomic nervous system
fascicolo: 2, volume: 61, anno: 1996,
pagine: 116 - 122
SICI:
0165-1838(1996)61:2<116:2DMGTR>2.0.ZU;2-2
Fonte:
ISI
Lingua:
ENG
Soggetto:
PREGANGLIONIC NEURONS; BAROREFLEX MODULATION; NERVE ACTIVITY; MUSCLE; HUMANS; PATTERNS; VAGAL; DRIVE; SKIN; CAT;
Keywords:
CARDIORESPIRATORY CONTROL; SYMPATHETIC NERVOUS SYSTEM; RESPIRATORY MODULATION; BARORECEPTOR REFLEX; CERVICAL SYMPATHETIC NERVE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
21
Recensione:
Indirizzi per estratti:
Citazione:
H.J. Habler et al., "2 DISTINCT MECHANISMS GENERATE THE RESPIRATORY MODULATION IN FIBER ACTIVITY OF THE RAT CERVICAL SYMPATHETIC TRUNK", Journal of the autonomic nervous system, 61(2), 1996, pp. 116-122

Abstract

Preganglionic multifibre activity was recorded in the cervical sympathetic trunk of vagotomized Wistar mts and analysed for its respiratorymodulation. The aim of the study was to investigate whether bath a central and a reflex component of respiratory modulation are observed insympathetic activity of mts as was previously demonstrated in cats. For this purpose, sympathetic activity was summed over several hundred cycles (i) with respect to phonic nerve discharge as an indicator for central respiration and (ii) with respect to tracheal pressure as an indicator for artificial ventilation. As a consequence of vagotomy bothcycles were desynchronized. Sympathetic activity which was analysed exhibited a central respiratory modulation with a minimum during inspiration and a broad peak during expiration. Additionally, in the activity of 44/49 filaments a ventilation-related modulation was seen in parallel with the falling phase of the blood pressure waves accompanying artificial ventilation. The analysis of the latter rhythm during central apnoea and after complete sine-aortic denervation proved its reflex origin and its independence of the central respiratory modulation, We conclude that in rats respiratory modulation of sympathetic activity is caused by two distinct mechanisms, one being of central and one being of reflex, probably baroreceptor, origin.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 29/11/20 alle ore 16:17:46