Results 51 to 60 of about 11,542 (237)

Mixed Palettes of Melanopsin Phototransduction [PDF]

open access: yesCell, 2018
Animal photoreceptors divide into two fundamental classes, ciliary and rhabdomeric. Jiang and colleagues demonstrate that this boundary is disregarded by the intrinsically photosensitive retinal ganglion cells of mammals. These neurons draw from phototransduction mechanisms of both classes, enriching the signals that they produce to drive a diversity ...
openaire   +2 more sources

Melanopsin: The Tale of the Tail [PDF]

open access: yesNeuron, 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
openaire   +2 more sources

Dendritic and axonal targeting patterns of a genetically-specified class of retinal ganglion cells that participate in image-forming circuits. [PDF]

open access: yes, 2014
BackgroundThere are numerous functional types of retinal ganglion cells (RGCs), each participating in circuits that encode a specific aspect of the visual scene.
Feldheim, David A   +6 more
core   +2 more sources

Small-molecule antagonists of melanopsin-mediated phototransduction [PDF]

open access: yesNature Chemical Biology, 2013
Melanopsin, expressed in a subset of retinal ganglion cells, mediates behavioral adaptation to ambient light and other non-image-forming photic responses. This has raised the possibility that pharmacological manipulation of melanopsin can modulate several central nervous system responses, including photophobia, sleep, circadian rhythms and ...
Jones, Kenneth A.   +13 more
openaire   +2 more sources

M1 Intrinsically Photosensitive Retinal Ganglion Cells Integrate Rod and Melanopsin Inputs to Signal in Low Light

open access: yesCell Reports, 2019
Summary: Light influences various behaviors and physiological processes that occur outside of our conscious perception, including circadian photoentrainment, sleep, and even learning and mood.
Seul Ki Lee   +2 more
doaj   +1 more source

Nerve growth factor, brain-derived neurotrophic factor, and the chronobiology of mood: a new insight into the "neurotrophic hypothesis" [PDF]

open access: yes, 2015
The light information pathways and their relationship with the body rhythms have generated a new insight into the neurobiology and the neurobehavioral sciences, as well as into the clinical approaches to human diseases associated with disruption of ...
IANNITELLI, ANGELA   +2 more
core   +2 more sources

Rhodopsin and Melanopsin Contributions to the Early Redilation Phase of the Post-Illumination Pupil Response (PIPR). [PDF]

open access: yesPLoS ONE, 2016
Melanopsin expressing intrinsically photosensitive Retinal Ganglion Cells (ipRGCs) entirely control the post-illumination pupil response (PIPR) from 6 s post-stimulus to the plateau during redilation after light offset.
Prakash Adhikari   +2 more
doaj   +1 more source

Adult Expression of Tbr2 Is Required for the Maintenance but Not Survival of Intrinsically Photosensitive Retinal Ganglion Cells

open access: yesFrontiers in Cellular Neuroscience, 2022
Retinal ganglion cells expressing the photopigment melanopsin are intrinsically photosensitive (ipRGCs). ipRGCs regulate subconscious non-image-forming behaviors such as circadian rhythms, pupil dilation, and light-mediated mood.
Sadaf Abed   +3 more
doaj   +1 more source

Cross‐Sectional and Longitudinal Associations of the Pupillary Light Response with Mild Cognitive Impairment [PDF]

open access: yesAlzheimers Dement
Abstract Background Pupillary light response (PLR) alterations have been observed in individuals with Alzheimer's disease and related dementias (ADRD). Little is known about the predictive utility of the PLR as a biomarker for ADRD or general cognitive decline.
Panizzon M   +7 more
europepmc   +2 more sources

Non-image Forming Light Detection by Melanopsin, Rhodopsin, and Long-Middlewave (L/W) Cone Opsin in the Subterranean Blind Mole Rat, Spalax Ehrenbergi: Immunohistochemical Characterization, Distribution, and Connectivity [PDF]

open access: yes, 2016
The blind mole rat, Spalax ehrenbergi, can, despite severely degenerated eyes covered by fur, entrain to the daily light/dark cycle and adapt to seasonal changes due to an intact circadian timing system.
Avivi, Aaron   +2 more
core   +2 more sources

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