descriptionPublicationkeyboard_double_arrow_right Article 01 Nov 1989 English Publisher:Springer Science and Business Media LLCJournal:Experimental Brain Research, volume 78 (issn: 0014-4819, eissn: 1432-1106,

Authors: Roger Shannon; Bruce G. Lindsey; Y. M. Hernandez;

doi: 10.1007/bf00230702

pmid: 2531680

Intercostal and abdominal muscle afferent influence on caudal medullary expiratory neurons that drive abdominal muscles

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Abstract

Our objective was to determine if caudal ventral respiratory group (VRG) expiratory (E) neurons that drive abdominal expiratory motoneurons in the lumbar cord respond to intercostal and lumbar nerve afferent stimulation. Results showed that 92% of medullary E-neurons that were antidromically activated from the upper lumbar cord reduced their activity in response to stimulation of external and internal intercostal and lumbar nerve afferents. We conclude that afferent information from intercostal and abdominal muscle tendon organs has an inhibitory effect on caudal VRG E-neurons that drive abdominal expiratory motoneurons.

Related Organizations

Florida Southern College
United States
State University System of Florida
United States
University of South Florida
United States

Keywords

Medulla Oblongata, Respiration, Cats, Action Potentials, Animals, Intercostal Muscles, Neurons, Afferent, Electric Stimulation, Abdominal Muscles

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