Wyniki wyszukiwania - Biblioteka Nauki

Nowa wersja platformy, zawierająca wyłącznie zasoby pełnotekstowe, jest już dostępna.
Przejdź na https://bibliotekanauki.pl

Ograniczanie wyników

Znaleziono wyników: 2

Liczba wyników na stronie

Wyniki wyszukiwania

Wyszukiwano:
w słowach kluczowych: BAROREFLEX

Sortuj według:

Ogranicz wyniki do:

Effect of electrical stimulation of A and C fibres of the aortic nerves on arterial peripheral and cerebral blood pressure

100%

Schoenborn R. , Dmowska M. , Unkiewicz A. , Modrzejewski E.

Folia Biologica

1996

tom 44

123-129

The effect of electrical stimulation of A and C fibres of the aortic nerves on arterial peripheral (PBP) and cerebral blood pressure (CBP) was studied in 12 rabbits (New Zealand White). The experiments have shown that selective stimulation of fibres A of the aortic nerves evokes every time depression of the arterial blood pressure in the peripheral circulation and slightly modifies pressure in the cerebral circulation. Selective stimulation of fibres C of the aortic nerves always elicits a significant decrease in arterial blood pressure in the peripheral circulation, whereas in the cerebral circulation it elicits a small decrease or a slight increase in arterial pressure. The obtained results point to a predominating role in depressor reaction of impulsation reaching the aortic arch through amyelic fibres C. The depressor reaction in the peripheral circulation is highest with simultaneous stimulation of the right and left aortic nerve during stimulation of both fibre A and C.

Inhibition of renal nerve discharge by liminal stimulation of non-myelinated aortic afferents

88%

Lupa K. , Kruk A. , Wojcik G. , Tarnecki R. , Niechaj A.

Acta Neurobiologiae Experimentalis

1993

tom 53

nr 1

183-186

The pattern of inhibitory responses of sympathetic nerve discharge to liminal activation of aortic C-fibres was studied in rabbits. The animals were anaesthetized with urethane and chloralose and vagotomized. Sympathetic postganglionic discharge was recorded from single fibres of the renal nerve. Inhibitory responses were elicited by single shocks or short trains (2-5 shocks at 10 Hz) and assessed from peri-stimulus time histograms. Clear-cut inhibition of the sympathetic discharge was observed in 6 out of 10 fibres. It was evoked by one shock in 5 fibres and by two shocks in 1 fibre. The mean latency of the inhibitory response elicited by one shock was 318?18 ms and its duration amounted to 196?22 ms (x?SE). The increase in the number of shocks prolonged the duration of the inhibitory response without markedly affecting their latency.