Synaptic inhibition of phrenic motoneurons evoked by stimulation of the superior laryngeal nerve

Bellingham, MC, Lipski, J and Voss, MD (1989) Synaptic inhibition of phrenic motoneurons evoked by stimulation of the superior laryngeal nerve. Brain Research, 486 2: 391-395. doi:10.1016/0006-8993(89)90530-1


Author Bellingham, MC
Lipski, J
Voss, MD
Title Synaptic inhibition of phrenic motoneurons evoked by stimulation of the superior laryngeal nerve
Journal name Brain Research   Check publisher's open access policy
ISSN 0006-8993
Publication date 1989-05-08
Sub-type Article (original research)
DOI 10.1016/0006-8993(89)90530-1
Volume 486
Issue 2
Start page 391
End page 395
Total pages 5
Language eng
Subject 1309 Developmental Biology
1312 Molecular Biology
2728 Clinical Neurology
2800 Neuroscience
Abstract Synaptic response evoked in phrenic motoneurones (PMNs) by stimulation of the superior laryngeal nerve (SLN) were analysed in anaesthetised cats. Stimulation of the SLN was followed by inhibition of ipsilateral phrenic nerve discharge with the latency of 9.5 ± 2.3 ms (mean ± S.D.) and hyperpolarizations of ipsilateral PMN membrane potentials (latency, 8.4 ± 2.1 ms) which were observed after stimuli applied both during inspiration and expiration. During the injection of Cl ions, the hyperpolarizations were either reversed or flattened in all 28 tested PMNs, thus indicating a direct inhibition. The possibility that the inhibitory postsynaptic potentials are produced by segmental respiratory interneurones is discussed.
Keyword Cat
Inhibitory postsynaptic potential
Intracellular recording
Phrenic motoneuron
Superior laryngeal nerve
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
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Citation counts: TR Web of Science Citation Count  Cited 17 times in Thomson Reuters Web of Science Article | Citations
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