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PMID: 4093876 Published · ppublish English Journal Article Research Support, Non-U.S. Gov't

Neurones in the brain stem of the cat excited by vagal afferent fibres from the heart and lungs.

The Journal of physiology ·Vol. 369 ·1985-12-00 ·Pages 1-15

Bennett JA, Goodchild CS, Kidd C, McWilliam PN

Abstract

Extracellular recordings were made from 164 neurones in the nucleus tractus solitarius and dorsal motor vagal nucleus of the chloralose-anaesthetized cat. 139 neurones were excited synaptically and 25 non-synaptically by electrical stimulation of cardiac and pulmonary vagal branches. Synaptically excited neurones fall into two populations, one activated solely by myelinated afferent fibres and a second activated solely by non-myelinated afferent fibres. 94 neurones were synaptically excited by afferent fibres in a single vagal branch while 45 were excited by stimulation of two or three branches. Neurones responding to volleys in myelinated afferent fibres were located in both medial and lateral regions of the nucleus tractus solitarius whilst those excited by non-myelinated afferent fibres were restricted to the medial region. Consistent differences in the locations of neurones excited by stimulation of either cardiac or pulmonary or by single or several branches could not be distinguished.

MeSH Terms
Action Potentials Afferent Pathways/physiology Animals Brain Stem/cytology,physiology Cats Heart/innervation Lung/innervation Nerve Fibers/physiology Nerve Fibers, Myelinated/physiology Neurons/physiology Synapses/physiology Time Factors Vagus Nerve/physiology
Authors & Affiliations
4 authors, click to expand affiliations / ORCID
Bennett J A
Goodchild C S
Kidd C
McWilliam P N
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Article Info
Journal
The Journal of physiology
Abbr.
J Physiol
ISSN
0022-3751
DOI
10.1113/jphysiol.1985.sp015884
Published
1985-12-00
Pages
1-15
Language
English
Region
England
NLM ID
0266262
PMCID
PMC1192632
Subset
IM
External Links
PubMed source DOI: 10.1113/jphysiol.1985.sp015884 PMC Full Text View journal details
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