scholarly journals Pressor responses to electrical stimulation of the carotid sinus nerve in cats

1949 ◽  
Vol 109 (3-4) ◽  
pp. 259-271 ◽  
Author(s):  
E. Neil ◽  
C. R. M. Redwood ◽  
A. Schweitzer
Keyword(s):  
Electrical Stimulation ◽  
Carotid Sinus ◽  
Carotid Sinus Nerve ◽  
Pressor Responses ◽  
Stimulation Of

Respiratory responses to aortic and carotid chemoreceptor activation in the dog

1991 ◽  
Vol 70 (6) ◽  
pp. 2539-2550 ◽  
Author(s):  
F. A. Hopp ◽  
J. L. Seagard ◽  
J. Bajic ◽  
E. J. Zuperku
Keyword(s):  
Electrical Stimulation ◽  
Carotid Body ◽  
Carotid Sinus ◽  
Chemical Stimulation ◽  
Respiratory Drive ◽  
Carotid Sinus Nerve ◽  
Nerve Activity ◽  
Respiratory Reflexes ◽  
Respiratory Responses ◽  
Stimulation Of

Respiratory responses arising from both chemical stimulation of vascularly isolated aortic body (AB) and carotid body (CB) chemoreceptors and electrical stimulation of aortic nerve (AN) and carotid sinus nerve (CSN) afferents were compared in the anesthetized dog. Respiratory reflexes were measured as changes in inspiratory duration (TI), expiratory duration (TE), and peak averaged phrenic nerve activity (PPNG). Tonic AN and AB stimulations shortened TI and TE with no change in PPNG, while tonic CSN and CB stimulations shortened TE, increased PPNG, and transiently lengthened TI. Phasic AB and AN stimulations throughout inspiration shortened TI with no changes in PPNG or the following TE; however, similar phasic stimulations of the CB and CSN increased both TI and PPNG and decreased the following TE. Phasic AN stimulation during expiration decreased TE and the following TI with no change in PPNG. Similar stimulations of the CB and CSN decreased TE; however, the following TI and PPNG were increased. These findings differ from those found in the cat and suggest that aortic chemoreceptors affect mainly phase timing, while carotid chemoreceptors affect both timing and respiratory drive.

Electrical Stimulation of the Carotid Sinus Nerve

1969 ◽  
Vol 49 (3) ◽  
pp. 589-596 ◽  
Author(s):  
Victor Parsonnet ◽  
Edwin L. Rothfeld ◽  
K. Venkata Raman ◽  
George H. Myers
Keyword(s):  
Electrical Stimulation ◽  
Carotid Sinus ◽  
Carotid Sinus Nerve ◽  
Stimulation Of

Interaction between carotid sinus baroreceptor and aortic nerve pressor reflexes in the dog

1979 ◽  
Vol 237 (6) ◽  
pp. H662-H667
Author(s):  
J. E. Kendrick ◽  
G. L. Matson
Keyword(s):  
Electrical Stimulation ◽  
Carotid Sinus ◽  
Pressor Response ◽  
Low Frequency ◽  
Carotid Sinus Nerve ◽  
Constant Frequency ◽  
Aortic Nerve ◽  
Frequency Stimulation ◽  
Pressor Reflexes ◽  
Stimulation Of

In dogs anesthetized with morphine-chloralose, strong, low-frequency (2 Hz) electrical stimulation of the aortic nerve (AN) causes pressure in the perfused hindlimbs to rise. This pressor response is followed by a large depressor phase upon cessation of stimulation. Simultaneous stimulation of the ipsilateral carotid sinus nerve (CSN) with intermittent trains of stimuli enhanced the AN pressor response by 113%. Similar stimulation of the contralateral CSN had little effect on the AN pressor response. Constant-frequency stimulation of the ipsilateral CSN also failed to enhance this response. Possible mechanisms of the interaction between these antagonistic reflexes were investigated. The results suggest that the augmentation of the AN pressor response results from a central neuronal interaction between these antagonistic reflexes.

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