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Evidence for medullary projections of the intercostal nerve-elicited inspiratory termination

M K Anderson1, D F Speck

  • 1Department of Physiology, University of Kentucky, MS 515 Chandler Medical Center, Lexington, KY 40536-0298, USA.

Brain Research
|July 21, 1999
PubMed

This study hypothesized that the ICN-elicited inspiratory termination reflex required synaptic activation in two distinct regions of the ventral respiratory group (VRG): (1) transitional (tVRG), and (2) pre-Bötzinger complex (pre-BötC). Data from adult cats indicate that axons of passage associated with the ICN-elicited termination reflex traverse tVRG, but that relevant synaptic processing does not occur in this region. Furthermore, data indicate that neither synaptic nor axonal transmission within the pre-BötC is required for the SLN- or ICN-elicited termination reflex.

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