Neural Control of Middle Ear Aeration

摘要: This study investigates the afferent and efferent pathways by which respiratory neurons in brain can monitor regulate middle ear aeration. Experiments were performed on 11 adult cynomolgus monkeys (Macaca fascicularis). The neural tracer, horseradish peroxidase, was placed transected nerves of tympanic plexus four animals. Horseradish peroxidase-labeled nerve terminal fields observed ipsilateral subnuclei nucleus solitary tract. may represent sensory pathway degree aeration is monitored brain. peroxidase injected into eustachian tube muscles six monkeys, motoneurons trigeminal motor (tensor palati muscle) ambiguus (levator muscle). These brain-stem nuclei regulated. results these primate experiments confirm our earlier studies rabbits cats. A theory for control proposed.