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Titolo:
CARDIAC RHYTHMICITY AMONG NTS NEURONS AND ITS RELATIONSHIP TO SYMPATHETIC OUTFLOW IN RABBITS
Autore:
HAYWARD LF; FELDER RB;
Indirizzi:
UNIV IOWA,COLL MED,DEPT INTERNAL MED,608 MRC IOWA CITY IA 52242 UNIV IOWA,COLL MED,CTR CARDIOVASC IOWA CITY IA 52242
Titolo Testata:
American journal of physiology. Heart and circulatory physiology
fascicolo: 3, volume: 38, anno: 1995,
pagine: 923 - 933
SICI:
0363-6135(1995)38:3<923:CRANNA>2.0.ZU;2-Q
Fonte:
ISI
Lingua:
ENG
Soggetto:
NUCLEUS-TRACTUS-SOLITARIUS; CAROTID-SINUS; CARDIORESPIRATORY REGION; VENTROLATERAL MEDULLA; BARORECEPTOR REFLEX; NERVE; CAT; ORGANIZATION; INTERNEURONS; INPUTS;
Keywords:
ARTERIAL BARORECEPTORS; CARDIOVASCULAR REGULATION; CROSS-CORRELATION ANALYSIS; SENSORY INTEGRATION; BRAIN STEM; ELECTROPHYSIOLOGY; NUCLEUS TRACTUS SOLITARIUS;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
32
Recensione:
Indirizzi per estratti:
Citazione:
L.F. Hayward e R.B. Felder, "CARDIAC RHYTHMICITY AMONG NTS NEURONS AND ITS RELATIONSHIP TO SYMPATHETIC OUTFLOW IN RABBITS", American journal of physiology. Heart and circulatory physiology, 38(3), 1995, pp. 923-933

Abstract

The caudal nucleus tractus solitarius (NTS) is the primary termination site for baroreceptor afferents, but distinct pulse phasic activity is rarely recorded from NTS neurons. In the present study cross-correlation analysis was used to identify pulse phasic activity in NTS neurons in the anesthetized rabbit. Crosscorrelation analysis demonstrated that 19 of 38 pressure-sensitive neurons had activity that correlated with the cardiac cycle, including 5 of 11 neurons activated by aortic depressor nerve stimulation, and 12 of 28 pressure-sensitive NTS neurons had activity that correlated with renal sympathetic nerve activity. Autocorrelation analysis identified 17 of 38 pressure-sensitive neurons that had rhythmic activity not related to the cardiac cycle (mean frequency 14.1 +/- 2 Hz). The results indicate that many NTS neurons dohave pulse phasic activity consistent with baroreceptor input, but this activity is difficult to detect because it is distributed throughout the cardiac cycle.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/12/20 alle ore 15:27:42