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Effect of Light Intensity on the Phase and Period Response Curves in the Nocturnal Field Mouse Mus booduga

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dc.contributor.author Sharma, Vijay Kumar
dc.date.accessioned 2011-02-25T11:44:26Z
dc.date.available 2011-02-25T11:44:26Z
dc.date.issued 2003
dc.identifier 0742-0528 en_US
dc.identifier.citation Chronobiology International 20(2), 223-231 (2003) en_US
dc.identifier.uri https://libjncir.jncasr.ac.in/xmlui/10572/49
dc.description.abstract The effect of light intensity on the phase response curve (PRC) and the period response curve (tauRC) of the nocturnal field mouse Mus booduga was studied. PRCs and tauRCs were constructed by exposing animals free-running in constant darkness (DD), to fluorescent light pulses (LPs) of 100 lux and 1000 lux intensities for 15min duration. The waveform of the PRCs and tauRCs evoked by high light intensity (1000 lux) stimuli. was significantly different compared to those constructed using low light intensity (100 lux). Moreover, a weak but significant correlation was observed between phase shifts and period changes when light stimuli of 1000 lux intensity were used; however, the phase shifts and period changes in the 100 lux PRC and tauRC were not correlated. This suggests that the intensity of light stimuli affects both phase and period responses in the locomotor activity rhythm of the nocturnal field mouse M. booduga. These results indicate that complex mechanisms are, involved in entrainment of circadian clocks, even in nocturnal rodents, in which PRC, tauRC, and dose responses play a significant role. en_US
dc.description.uri http://dx.doi.org/10.1081/CBI-120018578 en_US
dc.language.iso en en_US
dc.publisher Marcel Dekker Inc en_US
dc.rights © 2003 Marcel Dekker Inc en_US
dc.subject Circadian rhythms en_US
dc.subject mice en_US
dc.subject PRC en_US
dc.subject tau RC en_US
dc.subject light intensity en_US
dc.subject Circadian Activity Rhythms en_US
dc.subject Entrainment en_US
dc.subject System en_US
dc.subject Sensitivity en_US
dc.subject Rodents en_US
dc.title Effect of Light Intensity on the Phase and Period Response Curves in the Nocturnal Field Mouse Mus booduga en_US
dc.type Article en_US


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