Results 121 to 130 of about 7,378 (211)
Hyperpolarization-activated current (I(h)) in ganglion-cell photoreceptors.
PLoS ONE, 2010 Intrinsically photosensitive retinal ganglion cells (ipRGCs) express the photopigment melanopsin and serve as the primary retinal drivers of non-image-forming visual functions such as circadian photoentrainment, the pupillary light reflex, and ...
Matthew J Van Hook, David M Berson
doaj +1 more source
Differential monocular vs. binocular pupil responses from melanopsin-based photoreception in patients with anterior ischemic optic neuropathy. [PDF]
, 2015 We examined the effect of anterior ischemic optic neuropathy (AION) on the activity of intrinsically photosensitive retinal ganglion cells (ipRGCs) using the pupil as proxy.
Crippa, S.V., Kawasaki, A., Tsika, C.
core +1 more source
Evolution of mammalian Opn5 as a specialized UV-absorbing pigment by a single amino acid mutation. [PDF]
, 2014 Opn5 is one of the recently identified opsin groups that is responsible for nonvisual photoreception in animals. We previously showed that a chicken homolog of mammalian Opn5 (Opn5m) is a Gi-coupled UV sensor having molecular properties typical of ...
Fujita, Hirofumi +11 more
core +1 more source
Unexpected diversity and photoperiod dependence of the zebrafish melanopsin system.
PLoS ONE, 2011 Animals have evolved specialized photoreceptors in the retina and in extraocular tissues that allow them to measure light changes in their environment.
Vanessa Matos-Cruz +5 more
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β-Arrestin-dependent deactivation of mouse melanopsin.
PLoS ONE, 2014 In mammals, the expression of the unusual visual pigment, melanopsin, is restricted to a small subset of intrinsically photosensitive retinal ganglion cells (ipRGCs), whose signaling regulate numerous non-visual functions including sleep, circadian ...
Evan G Cameron, Phyllis R Robinson
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Impaired Circadian Photoentrainment in Opn5-Null Mice
iScience, 2018 Summary: The master circadian pacemaker in mammals resides in the hypothalamic suprachiasmatic nuclei (SCN) and is synchronized to ambient light/dark cycles (i.e., photoentrainment). Melanopsin (Opn4) and classical rod-cone photoreceptors are believed to
Wataru Ota +3 more
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, 2015 Treballs Finals de Grau de Farmàcia, Facultat de Farmàcia, Universitat de Barcelona, 2015. Tutora: Trinitat Cambras Riu.[eng] This Final Project is based on bibliographic research and integration of recent scientific articles that contain information ...
Ferré Ferré, Aileen
core
Human and macaque pupil responses driven by melanopsin-containing retinal ganglion cells
Vision Research, 2007 Melanopsin, a novel photopigment, has recently been localized to a population of retinal ganglion cells that display inherent photosensitivity. During continuous light and following light offset, primates are known to exhibit sustained pupilloconstriction responses that resemble closely the photoresponses of intrinsically-photoreceptive ganglion cells.
Gamlin, Paul D.R. +5 more
openaire +2 more sources
Cell Communication and SignalingMelanopsin is a photopigment belonging to the G Protein-Coupled Receptor (GPCR) family expressed in a subset of intrinsically photosensitive retinal ganglion cells (ipRGCs) and responsible for a variety of processes.
Dhanushan Wijayaratna +11 more
doaj +1 more source
Rods contribute to the light-induced phase shift of the retinal clock in mammals.
PLoS Biology, 2019 While rods, cones, and intrinsically photosensitive melanopsin-containing ganglion cells (ipRGCs) all drive light entrainment of the master circadian pacemaker of the suprachiasmatic nucleus, recent studies have proposed that entrainment of the mouse ...
Hugo Calligaro +7 more
doaj +1 more source