ISSN:
1432-2013
Keywords:
Vagal A and C fibres
;
local nerve cooling
;
conduction block
;
compound action potential
;
respiratory reflexes
;
rabbit
Source:
Springer Online Journal Archives 1860-2000
Topics:
Medicine
Notes:
Abstract In ten vagus nerves the effect of local cooling on the compound action potential was studied in the temperature range of 34 to 0 °C in spontaneously breathing, anaesthetized rabbits. The mean temperature at which the myelinated (A) fibres were completely blocked, was 10.2±2.4 °C (mean ± S.D.). In nine nerves, local vagus cooling to 0 °C failed to block all non-myelinated (C) fibres. In one nerve, total blocking occurred at 2.0 °C. We conclude that in the rabbit, the earlier found increase in tonic activity of the diaphragm following lung inflation or deflation during bilateral local vagus cooling to a temperature between 8 and 0 °C is due to afferent impulses in vagal C fibres.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00374839
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