期刊
TRENDS IN NEUROSCIENCES
卷 34, 期 11, 页码 572-580出版社
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tins.2011.07.001
关键词
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资金
- National Institute of General Medical Sciences
- National Eye Institute
- David and Lucile Packard Foundation
For decades, rods and cones were thought to be the only photoreceptors in the mammalian retina. However, a population of atypical photoreceptive retinal ganglion cells (RGCs) expresses the photopigment melanopsin and is intrinsically photosensitive (ipRGCs). These ipRGCs are crucial for relaying light information from the retina to the brain to control circadian photoentrainment, pupillary light reflex, and sleep. ipRGCs were initially described as a uniform population involved solely in signaling irradiance for non-image forming functions. Recent work, however, has uncovered that ipRGCs are unexpectedly diverse at the molecular, cellular and functional levels, and could even be involved in image formation. This review summarizes our current understanding of the diversity of ipRGCs and their various roles in modulating behavior.
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