[Hypothalamic stimulation effects on duodenal motility of rat. IV) Vias hypothalamo-duodenal (author's transl)].

UNLABELLED: Changes in duodenal motility, induced by electrical stimulation of hypothalamus, have been studied in rats, and registered by the baloon method. Localization of stimulated points was made by stereotaxic method, or by hostological control. Four animals were previously adrenalectomized. In 13 rats, the experiment has been repeated after bilateral cervical vagotomy. In 5 animals after total spinal cord transection, in the first dorsal segment. In 7 rats the experiment was reproduced after venous injections of atropine solution. In 5 rats after venous injections of dibenamine solution, and in other 5, after venous injection of hexamethonium solution.

CONCLUSIONS: 1) Impulses that produced excitatory duodenal effects were mediated by the vagi nerves. 2) Impulses that produied inhibitory duodenal effects were not transmitted by the vagi nerves, but by sympathetic pathways.