Linked Life Data

9605494

Source:http://linkedlifedata.com/resource/pubmed/id/9605494

Statements in which the resource exists as a subject.
PredicateObject
rdf:type
lifeskim:mentions
pubmed:issue
2
pubmed:dateCreated
1999-1-7
pubmed:abstractText
Twelve subjects have been studied in a chamber that isolated them from external noise and lighting. After several control days, one group (n = 6) was subjected to 18 x 27-h 'days' and the other to 11 x 30-h 'days'. Sleep was in the dark, and awake times were spent in normal domestic lighting (150-500 lux). Rectal temperature and wrist actimetry were measured throughout, and the phase of the circadian oscillator was inferred from that of the temperature data, purified to remove direct effects of activity. During the experimental 'days' the rhythms showed a mean period of 24.4 h. A detailed examination of the phase shifts from one day to the next showed that small advances and delays were superimposed upon this drift. Moreover, the mean size and direction of these shifts depended upon the time of exposure to lighting relative to the temperature minimum, as would be predicted from a phase-response curve.
pubmed:language
eng
pubmed:journal
pubmed:citationSubset
IM
pubmed:status
MEDLINE
pubmed:month
Apr
pubmed:issn
0304-3940
pubmed:author
pubmed:issnType
Print
pubmed:day
3
pubmed:volume
245
pubmed:owner
NLM
pubmed:authorsComplete
Y
pubmed:pagination
97-100
pubmed:dateRevised
2004-11-17
pubmed:meshHeading
pubmed:year
1998
pubmed:articleTitle
Light of domestic intensity produces phase shifts of the circadian oscillator in humans.
pubmed:affiliation
School of Human Sciences, Liverpool John Moores University, UK.
pubmed:publicationType
Journal Article