Effects of presso- and chemoceptive components of the cat's aortic nerve on sham rage behaviour

1963 ◽  
Vol 19 (10) ◽  
pp. 534-536 ◽  
Author(s):  
G. Baccelli ◽  
M. Guazzi ◽  
A. Libretti ◽  
A. Zanchetti
Keyword(s):  
Aortic Nerve ◽  
Sham Rage ◽  
Rage Behaviour

Pressoceptive and chemoceptive aortic reflexes in decorticate and in decerebrate cats

1965 ◽  
Vol 208 (4) ◽  
pp. 708-714 ◽  
Author(s):  
G. Baccelli ◽  
M. Guazzi ◽  
A. Libretti ◽  
A. Zanchetti
Keyword(s):  
Blood Pressure ◽  
Electrical Stimulation ◽  
Cardiovascular Responses ◽  
Decrease Blood Pressure ◽  
Aortic Nerve ◽  
Decerebrate Cats ◽  
Sham Rage ◽  
Stimulation Of

Graded electrical stimulation of three different components of the aortic nerve has been performed in decorticate cats, and later repeated after intercollicular decerebration. Threshold stimuli, involving only the largest fibers probably originating from pressoceptors, slightly decrease blood pressure and respiration both in quiet decorticate and in decerebrate cats. However, in decorticate animals during "spontaneous" fits of sham rage, inhibition of all somatic and visceral components of rage behavior is observed. When aortic nerve stimuli also involve intermediate-threshold fibers presumably of chemoceptive origin, excitation of rage behavior accompanied by strong hypertension and hyperventilation is seen in decorticate preparations, while after decerebration reflex hyperpnea is accompanied by hypotension or by no consistent pressor change. Stronger stimuli activating smaller fibers of probable pressoceptive origin still have conspicuous excitatory effects in decorticate animals, as shown by appearance of rage activity and pressor reactions, whereas after decerebration prominent hypotension with hyperpnea is observed. The predominance of excitatory cardiovascular responses to aortic nerve stimuli in decorticate animals, and of inhibitory reactions after decerebration, is discussed.

Depletion of noradrenaline in brainstem neurons during sham rage behaviour produced by acute brainstem transection in cat

1968 ◽  
Vol 7 (3) ◽  
pp. 448-451 ◽  
Author(s):  
Donald J. Reis ◽  
Kjell Fuxe
Keyword(s):  
Sham Rage ◽  
Rage Behaviour

Excitation of sham rage behaviour by controlled electrical stimulation of group I muscle afferents

1966 ◽  
Vol 22 (5) ◽  
pp. 315-316 ◽  
Author(s):  
A. Malliani ◽  
G. Carli ◽  
G. Mancia ◽  
A. Zanchetti
Keyword(s):  
Electrical Stimulation ◽  
Muscle Afferents ◽  
Group I ◽  
Sham Rage ◽  
Rage Behaviour ◽  
Stimulation Of

Demonstration of substance P in aortic nerve afferent fibers by combined use of fluorescent retrograde neuronal labeling and immunocytochemistry

Peptides ◽  
1980 ◽  
Vol 1 (4) ◽  
pp. 359-364 ◽  
Author(s):  
Cinda J. Helke ◽  
William Goldman ◽  
David M. Jacobowitz
Keyword(s):  
Substance P ◽  
Aortic Nerve ◽  
Afferent Fibers ◽  
Combined Use

The aortic nerve-sympathetic reflex in the rat

1985 ◽  
Vol 3 ◽  
pp. S20
Author(s):  
Yoshinobu Numao ◽  
Naohito Terui ◽  
Mamoru Saito ◽  
Tomoyuki Kuwaki ◽  
Mamoru Kumada
Keyword(s):  
Aortic Nerve

Conditioning of inhibition of sympathetic nerve discharge to stimulation of A-and C-fibres in the aortic nerve

1986 ◽  
Vol 94 (2) ◽  
pp. 91-98
Author(s):  
K. Lupa ◽  
Z. Gieroba ◽  
G Wójcik ◽  
A. Niechaj
Keyword(s):  
Sympathetic Nerve ◽  
Aortic Nerve ◽  
Stimulation Of ◽  
Nerve Discharge

Aortic depressor fibers in the rat: an electrophysiological study

1963 ◽  
Vol 205 (4) ◽  
pp. 771-774 ◽  
Author(s):  
Eduardo Moacyr Krieger ◽  
Ricardo Francisco Marseillan
Keyword(s):  
Action Potential ◽  
Electrophysiological Study ◽  
Sympathetic Trunk ◽  
Cervical Region ◽  
Laryngeal Nerves ◽  
Aortic Depressor Nerve ◽  
Aortic Nerve ◽  
Msec Duration ◽  
The Right

In 51 rats the distribution of the aortic depressor fibers which travel in the cervical region with the vagus, sympathetic, laryngeal, or as a separate aortic nerve was investigated by recording the action potential or by stimulating these nerves. A separate aortic depressor nerve was found in only 20% of the rats on the left side and in 5% on the right side. In these animals no depressor fibers were identified in the sympathetic trunk but the laryngeal nerves usually still exhibited depressor fiber activity. In those rats with no separate aortic depressor nerve the aortic fibers were present almost equally in the sympathetic trunk and laryngeal nerves, and on both sides of the neck. Only exceptionally was depressor activity found in the vagus trunk, and stimulation elicited depressor instead of pressor effects in 2 out of 12 rats. Optimal stimuli for obtaining hypotensive effects from the aortic depressor fibers were 80–150 per frequency and 1–2-msec duration.

Focal Autonomic Representation in the Cortex and its Relation to Sham Rage

1945 ◽  
Vol 4 (3) ◽  
pp. 295-304 ◽  
Author(s):  
Margaret A. Kennard
Keyword(s):  
Sham Rage

Is there a central nervous system component to acute baroreflex resetting in rats?

1992 ◽  
Vol 262 (2) ◽  
pp. H503-H510 ◽  
Author(s):  
C. M. Heesch ◽  
K. W. Barron
Keyword(s):  
Central Nervous System ◽  
Nervous System ◽  
Nerve Stimulation ◽  
Sympathetic Nerve ◽  
Sympathetic Nerve Activity ◽  
System Component ◽  
Nerve Activity ◽  
Linear Portion ◽  
Aortic Nerve ◽  
Maximum Inhibition

This study was designed to evaluate a possible central nervous system (CNS) component to acute baroreflex resetting. In nine arterial baroreceptor-denervated, chloralose-urethan-anesthetized rats, a control (C) aortic nerve stimulation curve (3-5 V, 1 ms, 0-64 Hz) was obtained. Next, a constant "baroreceptor" input was delivered to the CNS (left aortic nerve stimulation, 10 min, 10.2 +/- 1.5 Hz). Within the first 13 s of aortic nerve stimulation, maximum inhibition of lumbar sympathetic nerve activity (LSNA) was 60 +/- 7.8% of baseline and at 1 min it increased to 68 +/- 5.6% of baseline. At the end of the 10-min aortic nerve stimulation, LSNA was not different from the response at 1 min (68 +/- 5.6% = 74 +/- 4.1%). Immediately after the constant stimulation (within 30 s), a test or reset (RS) curve was obtained (0-64 Hz). A recovery (RC) curve was obtained 10-20 min later. The slope of the linear portion of the curve and the stimulation frequency that produced 50% maximum inhibition (ES50) were compared among the three baroreflex curves (C, RS, RC,) and no significant differences were found. Thus, although a CNS component to baroreflex adaptation was evident during the first minute of aortic nerve stimulation, a longer term acute resetting of the baroreflex curve did not occur.

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