Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1991-8-1
pubmed:abstractText
Two separate studies were done on two sets of rats (33 rats, 101 cells in Expt. 1; 16 rats, 25 cells in Expt. 2). In the first study trigeminal nuclear neurons were categorized by adequate stimulus and receptive field. A total of 43.6% responded to light touch and noxious (pinch and heat) stimulation; 27.7% responded only to noxious pinch and/or heat; 8.9% responded exclusively to innocuous touch, and the remainder were non-responsive. Ninety percent of the responsive cells showed increased discharge rates in response to noxious stimulation. In the second study, after characterization of response properties, single nanoinjections of Met-enkephalin (ME) were separately made into midbrain periaqueductal gray (PAG) and nucleus reticularis paragigantocellularis (PGC). The effects of ME on spontaneous (SD) and evoked (ED) discharge were assessed, and then in 8 cells, the effects were repeated and successfully challenged with naloxone. The major findings were: (1) ME applied either to PAG or PGC causes naloxone-reversible reduction of noci-evoked ED with no effect on SD; and (2) the responses of neurons to innocuous light touch were unaffected by ME.
pubmed:grant
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:chemical
pubmed:status
MEDLINE
pubmed:month
Feb
pubmed:issn
0006-8993
pubmed:author
pubmed:issnType
Print
pubmed:day
15
pubmed:volume
541
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
181-92
pubmed:dateRevised
2007-11-14
pubmed:meshHeading
pubmed:year
1991
pubmed:articleTitle
Effects of single nanoinjections of Met-enkephalin in the minimally anesthetized rat brainstem on trigeminal nuclear neurons: differential effects on spontaneous versus evoked activity and noci-evoked versus innocuously-evoked responses.
pubmed:affiliation
Department of Psychology, Northwestern University, Evanston, IL 60208.
pubmed:publicationType
Journal Article, Research Support, U.S. Gov't, P.H.S.