title: Raphé-produced excitation of spinal cord motoneurons in the cat.
abstract: In all motoneurons examined, both flexor and extensor, raphé (pallidus) stimulation consistently produced an excitatory postsynaptic potential (EPSP). Upon interaction with a group Ia EPSP there was summation resulting in neuronal discharge. The raphé-induced EPSP also facilitated the initial segment-somadendritic coupling and hence the motoneuron excitability. These data support an excitatory role for raphé-spinal fibers on cat hindlimb motoneurons.
authors.affiliation: Department of Veterinary and Comparative Anatomy, Pharmacology and Physiology, College of Veterinary Medicine, Washington State University, Pullman 99164-6520.
authors.forename: S J
authors.initials: SJ
authors.lastname: Fung
authors.forename: C D
authors.initials: CD
authors.lastname: Barnes
mesh_terms: D000200:Action Potentials; D000818:Animals; D002415:Cats; D004558:Electric Stimulation; D004566:Electrodes; D004594:Electrophysiology; D009046:Motor Neurons / Q000502:physiology*; D011903:Raphe Nuclei / Q000502:physiology*; D013116:Spinal Cord / Q000502:physiology*; D009435:Synaptic Transmission