Linked Life Data

20494456

Source:http://linkedlifedata.com/resource/pubmed/id/20494456

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
1-2
pubmed:dateCreated
2010-12-20
pubmed:abstractText
Several electroencephalographic (EEG) studies in schizophrenia report that the patients have reduced evoked gamma activity following visual and auditory stimulation. Somatosensory gamma activity has not previously been examined. It has been suggested that a dysfunction basic to schizophrenia spectrum traits would involve proprioceptive information processing and this has recently been supported by the finding of diminished latency of early proprioceptive evoked potentials in a sample of chronic schizophrenia patients. The proprioceptive stimulus used previously, and presently, consisted of an abrupt increase of weight on a hand-held load. Eighteen first-time admitted schizophrenia spectrum patients and 18 healthy matched comparison subjects were included. Proprioceptive evoked potentials were recorded as 64-channels EEG for 120 trials in two runs differing in sequence. Contra-lateral evoked beta (latency 90 ms, frequency 21 Hz) and gamma (latency 70 ms, frequency 32 Hz) oscillations were attenuated in the patient group. The healthy comparison subjects had increased gamma amplitude in the left hemisphere in the regular sequence, a phenomenon not seen in the patients. The deviant findings were unexpectedly more circumscribed in the schizophrenia than in the schizotypal personality disorder (SPD) patients. Future studies should include several concurrent psychophysiological measures.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Jan
pubmed:issn
0165-1781
pubmed:author
pubmed:copyrightInfo
Copyright © 2009 Elsevier Ltd. All rights reserved.
pubmed:issnType
Print
pubmed:day
30
pubmed:volume
185
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
215-24
pubmed:meshHeading
pubmed:year
2011
pubmed:articleTitle
Attenuation of beta and gamma oscillations in schizophrenia spectrum patients following hand posture perturbation.
pubmed:affiliation
Psychiatric Center Hvidovre, University Hospital of Copenhagen, Brøndby, Denmark. s.arnfred@tdcadsl.dk
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't