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Effect of section and stimulation of vago-thyroid nerve fibers on cortical excitability

Effect of section and stimulation of vago-thyroid nerve fibers on cortical excitability

Compt Rend Soc Biol 96(11): 775-776

Section of the superior and inferior pharyngeal and superior laryngeal nerves, as section of the vagus itself performed in earlier experiments, had the effect of increasing the chronaxie of the sigmoid gyrus 5-8 times. When, however, the peripheral ends of the severed nerves were stimulated with a Du Bois Reymond inductorium, chronaxie returned to normal (0.0001 sec). It is concluded that the thyroids act as an intermediate limb between the centers of the vagus and the cerebral cortex. Stimulation of both vagus and thyroids increases excitability of the cortex.

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