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Titolo:
THE RECRUITMENT PATTERN OF SINGLE VASOCONSTRICTOR NEURONS IN HUMAN
Autore:
TSUKAHARA R; MANO T;
Indirizzi:
AICHI HUMAN SERV CTR,INST DEV RES,713-8 KAMIYA CHO KASUGAI AICHI 48003 JAPAN NAGOYA UNIV,DEPT AUTOMAT NEUROSCI,DIV HIGHER NERVOUS CONTROL,ENVIRONMMED RES INST NAGOYA AICHI 46401 JAPAN
Titolo Testata:
Journal of the autonomic nervous system
fascicolo: 1-2, volume: 66, anno: 1997,
pagine: 26 - 34
SICI:
0165-1838(1997)66:1-2<26:TRPOSV>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
ROSTRAL VENTROLATERAL MEDULLA; SYMPATHETIC-NERVE DISCHARGES; HUMAN MUSCLE NERVES; SPINAL-CORD; PROJECTIONS; RABBITS; PULSE;
Keywords:
MUSCLE SYMPATHETIC NERVE ACTIVITY; SINGLE UNIT; RECRUITMENT ORDER; MICRONEUROGRAPHY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
26
Recensione:
Indirizzi per estratti:
Citazione:
R. Tsukahara e T. Mano, "THE RECRUITMENT PATTERN OF SINGLE VASOCONSTRICTOR NEURONS IN HUMAN", Journal of the autonomic nervous system, 66(1-2), 1997, pp. 26-34

Abstract

The aim of this study is to determine the recruitment pattern among individual vasoconstrictor neurons under the baroreceptor-mediated influence in man. Spikes of single vasoconstrictor units were detected from microneurograms with a template-matching method. A total of 39 single vasoconstrictor units were detected. Single vasoconstrictor units were different from each other in their susceptibility to be activated in response to changes in the R-R interval or blood pressure, The unitswith higher firing probability had a shorter threshold R-R interval and a higher threshold diastolic blood pressure than units with lower firing probability. In sympathetic responses consisting of only one spike (single-spike responses), units with a lower threshold frequently appeared and units with a higher threshold joined mull-spike responses. The units with a short threshold R-R interval tended to have a long inhibitory latency from R wave, suggesting low conduction velocity. Thecorrelation between firing probability and firing threshold and that between appearance in single-spike response and multi-spike response suggest a hierarchical manner of recruitment of vasoconstrictor units. For beat-to-beat responses, however, some deviation from the hierarchical recruitment was also observed. (C) 1997 Elsevier Science B.V.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/09/20 alle ore 19:53:42