[Activity of the neurons of the abdominal-aortic plexus in the guinea pig during preservation of its connections with the large intestine].

With intracellular recording, peripheral inputs from the mechanoreceptor C--afferents of the colon which signal the motor status of its isolated oral and aboral segments were shown to converge on neurons of the abdominal aortic plexus of the guinea pig. A proportion (19.8%) of synapthcally activated neurons of this plexus send axons to the periphery within mesenteric nerves, thus forming the efferent link of an extracentral intestio--intestinal reflex.