Neuronal electrical activity in the submucosal plexus of the cat small intestine.
Extracellular recording of action potential discharge from single units in the submucosal plexus of cat small intestine revealed both continuously active and electrically silent neurons. The continuously active neurons consisted of slow and fast burst-type units and single-spike units. The silent neurons were activated by input transmitted from adjacent ganglia by the interganglionic fiber tracts and discharged in response to mechanical deformation of the ganglia and to electrical stimulation of adjacent ganglia. Both excitatory and inhibitory interneuronal interactions were observed between ganglion cells with burst-type discharge patterns and the electrical activity of some of these cells was influenced by electrical stimulation of adjacent ganglia. The observations are consistent with the concept that the individual ganglia of the submucosal plexus are interconnected into a single integrative network.
D000109:Acetylcholine / Q000494:pharmacology; D000818:Animals; D001285:Atropine / Q000494:pharmacology; D002415:Cats; D004386:Duodenum / Q000294:innervation*; D004558:Electric Stimulation; D005071:Evoked Potentials / Q000187:drug effects; D007082:Ileum / Q000294:innervation*; D007395:Interneurons / Q000502:physiology; D007583:Jejunum / Q000294:innervation*; D009474:Neurons / Q000502:physiology; D013368:Submucous Plexus / Q000502:physiology*; D009435:Synaptic Transmission / Q000187:drug effects; D014403:Tubocurarine / Q000494:pharmacology
D001285:Atropine; D000109:Acetylcholine; D014403:Tubocurarine