Key result
An excitatory sympathetic spinal reflex elicited by aortic constriction in spinal cats markedly enhanced efferent sympathetic firing from 7+/-2 to 33+/-7 spikes/s.
Population
9 unanesthetized decerebrate-vagotomized cats
Comparison
C1 spinal section and excitatory sympathetic… vs Baseline (before C1 spinal section)
Design
Preclinical
Authors
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Spinal sympathetic LF rhythmicity may persist independently; hypothesis-generating for Mayer wave mechanisms and requires intact human validation.
Absolute Event Rate: 33% vs 7%
LF and HF oscillations are detectable in sympathetic nerve activity and heart rate variability of decerebrate-vagotomized spinal cats, and an excitatory spinal reflex increases the power of these spectral components.
Montano et al. (2000) studied this question. C1 spinal section and excitatory sympathetic spinal reflex elicited by aortic constriction vs. Before C1 spinal section and baseline before reflex was evaluated on Efferent sympathetic firing rate. An excitatory sympathetic spinal reflex elicited by aortic constriction in spinal cats markedly enhanced efferent sympathetic firing from 7+/-2 to 33+/-7 spikes/s.
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