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Dim Light In The Evening Causes Coordinated Realignment Of Circadian Rhythms, Sleep, And Short-Term Memory, Shu K.E. Tam, Laurence A. Brown, Tatiana S. Wilson, Selma Tir, Angus S. Fisk, Carina A. Pothecary, Vincent Van Der Vinne, Russell G. Foster, Vladyslav V. Vyazovskiy, David M. Bannerman, Mary E. Harrington, Stuart N. Peirson
Dim Light In The Evening Causes Coordinated Realignment Of Circadian Rhythms, Sleep, And Short-Term Memory, Shu K.E. Tam, Laurence A. Brown, Tatiana S. Wilson, Selma Tir, Angus S. Fisk, Carina A. Pothecary, Vincent Van Der Vinne, Russell G. Foster, Vladyslav V. Vyazovskiy, David M. Bannerman, Mary E. Harrington, Stuart N. Peirson
Psychology: Faculty Publications
Light provides the primary signal for entraining circadian rhythms to the day/night cycle. In addition to rods and cones, the retina contains a small population of photosensitive retinal ganglion cells (pRGCs) expressing the photopigment melanopsin (OPN4). Concerns have been raised that exposure to dim artificial lighting in the evening (DLE) may perturb circadian rhythms and sleep patterns, and OPN4 is presumed to mediate these effects. Here, we examine the effects of 4-h, 20-lux DLE on circadian physiology and behavior in mice and the role of OPN4 in these responses. We show that 2 wk of DLE induces a phase delay …