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In experiments on 24 anesthetized rats with preserved spontaneous respiration, we first recorded the volley impulse activity of neurons (n = 30) in the brainstem A5 zone, which was induced by periodical stretchings of the forelimb flexors and hindlimb extensors. The frequency of action potentials in such volleys was, on average, 99.7 ± 19.6 sec−1. In the course of this kinesthetic stimulation, along...
We recorded spike activity of noradrenergic neurons of zone A5 (n = 89) in the brain of anesthetized rats under conditions of hypoxic stimulation (breathing with pure N2, 10 sec), thermonociceptive stimulation (tail-flick test), and reversible hypothermal blocking of the central respiratory activity. Hypoxic stimulation of peripheral O2-sensitive chemoreceptors considerably increased the discharge...
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