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dc.contributor.authorSharma, Vijay Kumar-
dc.date.accessioned2012-01-24T09:46:23Z-
dc.date.available2012-01-24T09:46:23Z-
dc.date.issued2003-
dc.identifier0742-0528en_US
dc.identifier.citationChronobiology International 20(3), 389-404 (2003)en_US
dc.identifier.urihttps://libjncir.jncasr.ac.in/xmlui/10572/246-
dc.descriptionRestricted Accessen_US
dc.description.abstractCircadian clocks with characteristic period (tau) can be entrained to light/dark (LD) cycles by means of (i) phase shifts which are due to D/L "dawn" and/or L/D "dusk" transitions, (ii) period changes associated with long-term light exposure, or (iii) by combinations of the above possibilities. Based on stability analysis of a model circadian clock it was predicted that nocturnal burrowing mammals would benefit less from period responses than their diurnal counterparts. The model further predicted that maximal stability of circadian clock is reached when the clock slightly changes both its phase and period in response to light stimuli. Analyses of empirical phase response curve (PRC) and period response curve (tauRC) of some diurnal and nocturnal mammals revealed that PRCs of both diurnal and nocturnal mammals have similar waveform while tauRCs of nocturnal mammals are of smaller amplitude than those of diurnal mammals. The shape of the tauRC also changes with age and with increasing strength of light-stimuli. During erratic fluctuations in light intensity under different weather conditions, the stability of phase of entrainment of circadian clocks appears to be achieved by an interplay between phase and period responses and the strength of light stimuli.en_US
dc.description.urihttp://dx.doi.org/10.1081/CBI-120020422en_US
dc.language.isoenen_US
dc.publisherMarcel Dekker Incen_US
dc.rights© 2003 Marcel Dekker Incen_US
dc.subjectPRCen_US
dc.subjectTRCen_US
dc.subjecttransienten_US
dc.subjectnonparametricen_US
dc.subjectparametricen_US
dc.subjectentrainmenten_US
dc.subjectMouse Mus-Boodugaen_US
dc.subjectLocomotor-Activity Rhythmen_US
dc.subjectLight-Induced Phaseen_US
dc.subjectSkeleton Photoperiodic Regimesen_US
dc.subjectCasein Kinase-Ien_US
dc.subjectNocturnal Rodentsen_US
dc.subjectSuprachiasmatic Nucleusen_US
dc.subjectCreb Phosphorylationen_US
dc.subjectNatural Entrainmenten_US
dc.subjectFunctional-Analysisen_US
dc.titlePeriod Responses to Zeitgeber Signals Stabilize Circadian Clocks During Entrainmenten_US
dc.typeArticleen_US
Appears in Collections:Research Articles (V. K. Sharma)

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