Effects of muscular contraction on discharge patterns of neurons in the medullary raphe nuclei.
Cells of the medullary raphe nuclei were characterized as sympathoinhibitory (SI), sympathoexcitatory (SE) or serotonergic (5-HT). When muscular contraction (MC) was evoked by stimulation of the L7 and S1 ventral roots, putative SI cells were inhibited while putative SE cells were excited. 5-HT cells were unaffected by MC. These data are discussed in relation to integration of somatosensory and cardiovascular reflexes.
Iwamoto
G A
GA
Department of Veterinary Biosciences, University of Illinois, Urbana 61801.
Clement
M E
ME
Brtva
R D
RD
McCall
R B
RB
D000818:Animals; D001794:Blood Pressure / Q000502:physiology; D002415:Cats; D004558:Electric Stimulation; D004562:Electrocardiography; D004566:Electrodes; D008526:Medulla Oblongata / Q000166:cytology / Q000502:physiology*; D009119:Muscle Contraction / Q000502:physiology*; D009474:Neurons / Q000502:physiology*; D010525:Peripheral Nerves / Q000502:physiology; D011311:Pressoreceptors / Q000502:physiology; D011903:Raphe Nuclei / Q000166:cytology / Q000502:physiology*; D012018:Reflex / Q000502:physiology; D012039:Regional Blood Flow / Q000502:physiology; D012701:Serotonin / Q000502:physiology; D013564:Sympathetic Nervous System / Q000502:physiology
D012701:Serotonin