Excitatory and inhibitory inputs to single neurones in the solitary tract nucleus and adjacent reticular formation

摘要: Summary Microelectrode recordings were made from single neurones located in the solitary tract nucleus and adjacent reticular formation of decerebrate or anaesthetized cats. Stimulation various cranial nerves cutaneous areas cerebral cortex was used to characterize excitatory inhibitory inputs these brain stem regions. Most units could be excited by stimulation only superior laryngeal nerve (SLN) glossopharyngeal (IX). In particular input examined, both primary afferent fibres activated with a short-latency SLN stimulation. The inhibited for as long 700 msec conditioning especially IX infraorbital (IO). Other stimuli rarely effective. Neurones ventral exhibited an SLN, IX, IO sometimes other nerves. However, some latencies longer general than those noted neurones. subject more widespread influences neurones, responses also facilitated. On basis antidromic activation, many found project rostrally vicinity trigeminal motor nucleus. acting on are discussed relation their possible involvement perceptual reflex activities which orofacial pharyngeal-laryngeal concerned.