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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
2-3
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pubmed:dateCreated |
1989-5-16
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pubmed:abstractText |
Electrophysiological studies were performed to determine whether or not cholinoceptive neurons are present in the rat medial vestibular nucleus (MVN) using brainstem slice preparations. Fifty-three MVN neurons, whose activities were extracellularly recorded, fired spikes spontaneously and regularly with an interspike interval of 180 +/- 27 ms (mean +/- S.E.M.) and a coefficient of variation of 0.11 +/- 0.02. Intracellularly recorded neurons also exhibited similar spontaneous and regular generation of action potentials. Carbachol dose-dependently increased the spontaneous firing, although the firing rate was decreased in a few neurons. The addition of atropine reduced the firing rate, and dose-dependently attenuated the carbachol-induced excitation of the neurons. In a low Ca2+ and high Mg2+ medium, carbachol also increased the firing rate. These results indicate that the MVN contains neurons with spontaneous and regular firing, and that the excitability of these neurons is regulated by a cholinergic muscarinic mechanism.
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pubmed:language |
eng
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pubmed:journal | |
pubmed:citationSubset |
IM
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pubmed:chemical | |
pubmed:status |
MEDLINE
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pubmed:month |
Nov
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pubmed:issn |
0304-3940
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:day |
11
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pubmed:volume |
93
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
231-5
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pubmed:dateRevised |
2003-11-14
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pubmed:meshHeading |
pubmed-meshheading:3241648-Animals,
pubmed-meshheading:3241648-Atropine,
pubmed-meshheading:3241648-Carbachol,
pubmed-meshheading:3241648-Electrophysiology,
pubmed-meshheading:3241648-Male,
pubmed-meshheading:3241648-Neurons,
pubmed-meshheading:3241648-Rats,
pubmed-meshheading:3241648-Rats, Inbred Strains,
pubmed-meshheading:3241648-Receptors, Cholinergic,
pubmed-meshheading:3241648-Vestibular Nuclei
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pubmed:year |
1988
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pubmed:articleTitle |
Electrophysiological evidence for cholinoceptive neurons in the medial vestibular nucleus: studies on rat brain stem in vitro.
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pubmed:affiliation |
Department of Pharmacology, Faculty of Medicine, Kyoto University, Japan.
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pubmed:publicationType |
Journal Article
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