On the dominant rhythm in the discharges of single postganglionic sympathetic neurones innervating the rat tail artery.

Anaesthetized rats (n=51)

Four types of preparation: spontaneously breathing, artificially ventilated, artificially ventilated with vagi cut, and artificially ventilated with vagus and sino-aortic denervation; along with hypocapnic apnoea and hyperthermia

Internal comparisons between sympathetic rhythm and phrenic rhythm/artificial ventilation cycle

Frequency of the dominant rhythmic discharge of single sympathetic postganglionic neuronessurrogate