The effect of the electrical stimulation of the peripheral stump of the cervical sympathetic nerve, at physiological frequencies, was studied on the activity of mechanoreceptors with sensory field around the teeth, in anaesthetized and paralysed animals. In the 33% of the tested units either an increase of the resting discharge rate or an activation of the receptors occurred. The latency of this response ranged between 0.3 and 6 sec; the maximum discharge frequency, which varied widely in different units, was reached within the subsequent 2 to 4 sec and usually outlasted the duration of the stimulation. The possible mechanisms of this sympathetic effect are discussed on the basis of its latency and pattern and of the following further observations: i) its presence after denervation of carotid sinus and glomus, ii) its dependence on the stimulation of preganglionic sympathetic fibres belonging to the groups S1 and S2, iii) the absence of response in the mechanoreceptor units by the temporary occlusion of the ipsilateral common carotid artery.

Sympathetic modulation of periodontal mechanoreceptors.

PASSATORE, Magda;
1983-01-01

Abstract

The effect of the electrical stimulation of the peripheral stump of the cervical sympathetic nerve, at physiological frequencies, was studied on the activity of mechanoreceptors with sensory field around the teeth, in anaesthetized and paralysed animals. In the 33% of the tested units either an increase of the resting discharge rate or an activation of the receptors occurred. The latency of this response ranged between 0.3 and 6 sec; the maximum discharge frequency, which varied widely in different units, was reached within the subsequent 2 to 4 sec and usually outlasted the duration of the stimulation. The possible mechanisms of this sympathetic effect are discussed on the basis of its latency and pattern and of the following further observations: i) its presence after denervation of carotid sinus and glomus, ii) its dependence on the stimulation of preganglionic sympathetic fibres belonging to the groups S1 and S2, iii) the absence of response in the mechanoreceptor units by the temporary occlusion of the ipsilateral common carotid artery.
1983
121
55
65
PASSATORE M ;FILIPPI GM
File in questo prodotto:
Non ci sono file associati a questo prodotto.

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/2318/32789
Citazioni
  • ???jsp.display-item.citation.pmc??? 5
  • Scopus ND
  • ???jsp.display-item.citation.isi??? ND
social impact