Linked Life Data

7618024

Source:http://linkedlifedata.com/resource/pubmed/id/7618024

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
4
pubmed:dateCreated
1995-8-22
pubmed:abstractText
Inter- (INTERr) and intrahemispheric (INTRAr) electroencephalographic (EEG) correlations were assessed in eight young male adults during wakefulness with eyes closed before going to sleep, and during stage 2, stage 4 and paradoxical sleep (PS) on the second night spent at the laboratory. Pearson product-moment correlations were calculated between EEG signals of every pair of electrodes (C3, C4, F3, F4, T3, T4) for six bands and for every 0.5 Hz from 1.5 to 15 Hz. Previous results of higher INTERr during sleep compared to during wakefulness were confirmed for the delta and theta bands during stage 2 sleep and PS and for sleep spindles during stage 2 sleep. The present results extend these findings to INTERr between F3 and F4 and during stage 4 sleep. INTRAr of 1.5-6.5 and 11-15 Hz was significantly higher during stages 2 and 4, whereas during PS INTRAr did not change. These data show that cortical changes during sleep are also observed in functional differentiation between cortical sites. Inter- and intrahemispheric differentiation is attenuated during stage 2 and 4 sleep, whereas during PS only inter-hemispheric differentiation is attenuated but intrahemispheric differentiation maintains similar levels of wakefulness. The attenuation of cortical differentiation may be of relevance for the understanding of mental activity changes during sleep.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
May
pubmed:issn
0161-8105
pubmed:author
pubmed:issnType
Print
pubmed:volume
18
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
257-65
pubmed:dateRevised
2009-1-29
pubmed:meshHeading
pubmed:year
1995
pubmed:articleTitle
Inter- and intrahemispheric EEG correlation during sleep and wakefulness.
pubmed:affiliation
Departamento de Psicofisiología, Facultad de Psicología, Universidad Nacional Autónoma de México, Mexico, D.F.
pubmed:publicationType
Journal Article, Research Support, Non-U.S. Gov't