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The effect of multiple pulses of light on the circadian phase response of the rat
journal contribution
posted on 1999-06-01, 00:00 authored by Mark StokesMark Stokes, S Kent, S M ArmstrongMultiple pulses of light administered to humans have been reported to result in type 0 phase responses. These results suggest the underlying pacemaker to be nonsimple. At present, results with this type of protocol have only been reported for humans. Therefore, multiple pulses of light were administered to rats. Rats were exposed to one, two, three, or four pulses of light for 5 h (1000 lux) at successive 24-h intervals. Results did not suggest a type 0 phase response. Nonetheless, results with a second, third, or fourth light exposure were not fully predictable from a phase response curve derived from a single light pulse.
History
Journal
Journal of biological rhythmsVolume
14Issue
3Pagination
172 - 184Publisher
SageLocation
London, Eng.Publisher DOI
ISSN
0748-7304Language
engPublication classification
C Journal article; C1.1 Refereed article in a scholarly journalCopyright notice
1999, SageUsage metrics
Keywords
AnimalsCircadian RhythmLightPeriodicityRatsRats, Long-EvansScience & TechnologyLife Sciences & BiomedicineBiologyPhysiologyLife Sciences & Biomedicine - Other Topicscircadianpacemakerphase responseperiodmultiple pulsesratFUNCTIONAL-ANALYSISNOCTURNAL RODENTSBRIGHT LIGHTACTIVITY RHYTHMSSHIFT WORKPACEMAKERSCURVESCLOCKENTRAINMENTFREQUENCYPhysiology
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