Linked Life Data

9121733

Source:http://linkedlifedata.com/resource/pubmed/id/9121733

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
3
pubmed:dateCreated
1997-4-24
pubmed:abstractText
The activities of expiratory neurons of the caudal ventral respiratory group (cVRG) (n = 31) were recorded extracellularly during vocalization in unanesthetized, decerebrate cats. Vocalization was induced by electrical stimulation (0.2 ms, 20-80 microA, 100 Hz, lasting for 2-5 s) of the periaqueductal gray (PAG). The firing rates of more than two-thirds of the neurons (24/31) increased during periods of vocalization induced by stimulation of the PAG, with an increase in abdominal muscle activities. The axons of most of these neurons (19/24) projected to the contralateral lumbar spinal cord, and one-third of the bulbospinal neurons (6/19) were orthodromically activated by stimulation of the PAG. Even after sectioning of the axons of bulbospinal cVRG neurons by midsagittal lesion between the obex and the C1 spinal cord, stimulation of the PAG still induced adduction of the vocal cords and vocalization. However, activities of abdominal muscles during vocalization were abolished. These results indicate that the efferent signals for vocalization from the PAG may be relayed at the cVRG neurons and converted into adequate activation of these neurons, contributing to the activation of the abdominal muscles for vocalization.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Nov
pubmed:issn
0168-0102
pubmed:author
pubmed:issnType
Print
pubmed:volume
26
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
225-33
pubmed:dateRevised
2006-11-15
pubmed:meshHeading
pubmed:year
1996
pubmed:articleTitle
Functional role of ventral respiratory group expiratory neurons during vocalization.
pubmed:affiliation
Department of Physiology, Asahikawa Medical College, Japan.
pubmed:publicationType
Journal Article, Comparative Study, Research Support, Non-U.S. Gov't