Results 21 to 30 of about 6,987 (212)
Melanopsin expression in the cornea [PDF]
Visual Neuroscience, 2018 AbstractA unique class of intrinsically photosensitive retinal ganglion cells in mammalian retinae has been recently discovered and characterized. These neurons can generate visual signals in the absence of inputs from rods and cones, the conventional photoreceptors in the visual system. These light sensitive ganglion cells (mRGCs) express the non-rod,
Delwig, Anton +11 more
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Melanopsin: The Tale of the Tail [PDF]
Neuron, 2016 In this issue of Neuron, Mure et al. (2016) demonstrate that two mechanisms-phosphorylation of a C-terminal intracellular region, and mechanism involving the whole of the C terminus-oppositely shape the kinetics and sensitivity of the nonvisual photoreceptor melanopsin.
Russell N, Van Gelder, Ethan D, Buhr
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Vision: Melanopsin as a Raumgeber [PDF]
Current Biology, 2017 Two new studies show that neural systems receiving inputs from the melanopsin-containing retinal ganglion cells encode spatial information and therefore see the world in more detail than previously thought.
Spitschan, M, Aguirre, G
openaire +3 more sources
Longitudinal Evaluation of Chromatic Pupillometry and Retinal Thickness in Dogs With Sudden Acquired Retinal Degeneration Syndrome. [PDF]
Vet OphthalmolABSTRACT Objective To determine longitudinal changes in chromatic pupillary light reflexes (cPLR) and retinal layers in dogs with sudden acquired retinal degeneration syndrome (SARDS). Animals Studied Clinical evaluation: Fifteen SARDS‐affected and nine control dogs.
Kim S +6 more
europepmc +2 more sources
An evaluation of melanopsin function and light exposure in depressive disorders [PDF]
, 2017 Melanopsin cells in the eye signal environmental light to multiple brain areas including those for circadian rhythms, for controlling the pupil light reflex and mood.
Ojha, Govinda
core +1 more source
Melanopsin-mediated pupil function is impaired in Parkinson’s disease [PDF]
, 2018 Parkinson’s disease (PD) is characterised by non-motor symptoms including sleep and circadian disruption. Melanopsin-expressing intrinsically photosensitive Retinal Ganglion Cells (ipRGC) transmit light signals to brain areas controlling circadian ...
Graham Kerr +10 more
core +1 more source
Spectral Tuning in Mammalian Melanopsins. [PDF]
Mol Biol EvolAbstract Melanopsin is a light-sensitive G-protein coupled receptor responsible for essential visual and non-visual light-mediated behaviors in mammals. Human melanopsin shows maximal sensitivity (λmax) in the blue region of the spectrum (∼480 nm), and available evidence suggests that this spectral sensitivity may be retained across ...
McDowell RJ +3 more
europepmc +4 more sources
Light adaptation characteristics of melanopsin
Vision Research, 2021 Following photopigment bleaching, the rhodopsin and cone-opsins show a characteristic exponential regeneration in the dark with a photocycle dependent on the retinal pigment epithelium. Melanopsin pigment regeneration in animal models requires different pathways to rods and cones.
Pant, Mukund +3 more
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Melanopsin: an exciting photopigment
Trends in Neurosciences, 2008 The discovery that mice lacking rods and cones are capable of regulating their circadian rhythms by light provided the conceptual framework for the discovery of an entirely new photoreceptor system within the mammalian eye. We now know that a small subset of retinal ganglion cells are directly photosensitive and utilize an opsin/vitamin A-based ...
Hankins, M, Peirson, S, Foster, R
openaire +2 more sources
Melanopsin expression in the retinas of owls with different daily activity patterns
Journal of Photochemistry and Photobiology, 2022 Melanopsin is a photopigment found in a subset of retinal ganglion cells that is responsible for generating a series of responses to light in organisms, such as circadian rhythm regulation, pupillary light reflex, and body temperature control.
Maria Júlia Vilani Naman +6 more
doaj +1 more source