Results 71 to 80 of about 11,542 (237)
The Effects of Neurosteroids, such as Pregnenolone Sulfate and its receptor, TrpM3 in the Retina. [PDF]
, 2019 Pregnenolone sulfate (PregS) is the precursor to all steroid hormones and is produced in neurons in an activity dependent manner. Studies have shown that PregS production is upregulated during certain critical periods of development, such as in the first
Webster, Corey Michael
core
A Method to Evaluate the Stimulation of a Real World Field of View by Means of a Spectroradiometric Analysis [PDF]
, 2015 Stimulation elicited by a real world field of view is related to the color, the intensity and the direction of the information reaching the eye: different spectral power distributions of light trigger different responses. An evaluation of the stimulation
Barbalace, Monica +7 more
core +2 more sources
Melanopsin Stimulation Modulates Blackness Induction
Color Research &Application, Volume 51, Issue 1, January/February 2026.Spectral power distributions of (A) the surround and (B) the center stimuli. The stimulus intensity to melanopsin cells of the surround was modulated from 0.51 to 1.21 (#1; 0.51, #2; 0.65, #3; 0.78, #4; 0.93, #5; 1.09, #6; 1.21, #7; 0.51, #8; 0.67, #9; 0.95, #10; 1.21) in the melanopic/photopic ratio (M/P ratio) under both the 700 cd/m2 and 375 cd/m2 ...
Masahiko Yamakawa +2 more
wiley +1 more source
Frontiers in Neuroscience, 2020 Intrinsically photosensitive retinal ganglion cells (ipRGCs) express the photopigment melanopsin and project to central targets, allowing them to contribute to both image-forming and non-image forming vision.
Cyril G. Eleftheriou +5 more
doaj +1 more source
Evolution and functional characterisation of melanopsins in a deep-sea chimaera (elephant shark, Callorhinchus milii). [PDF]
PLoS ONE, 2012 Non-visual photoreception in mammals is primarily mediated by two splice variants that derive from a single melanopsin (OPN4M) gene, whose expression is restricted to a subset of retinal ganglion cells.
Wayne I L Davies +9 more
doaj +1 more source
Reduced Neuronal Self‐Avoidance in Mouse Starburst Amacrine Cells With Only One Pcdhg Isoform
Developmental Neurobiology, Volume 86, Issue 1, January 2026.ABSTRACT The clustered protocadherins (cPcdhs) are a family of ∼60 homophilic cell adhesion molecules expressed across three gene clusters (Pcdha, Pcdhb, and Pcdhg) with a variety of essential roles in the developing nervous system. Some of these roles rely on specific isoforms, whereas others are more consistent with a model of isoform redundancy or a
Cathy M. McLeod +4 more
wiley +1 more source
Retrograde Melanopsin Signaling Increases With Age in Retinal Degenerate Mice Lacking Rods and the Majority of Cones [PDF]
, 2016 PURPOSE: Following on from reports of retrograde retinal signaling in mice, we sought to investigate the influence of age and retinal location on this phenomenon using mice that lack rods and the majority of cones. METHODS: We used functional anatomy for
Coffey, P, Gias, C, Semo, M, Vugler, A
core +1 more source
Melanopsin Tristability for Sustained and Broadband Phototransduction [PDF]
Neuron, 2015 Mammals rely upon three ocular photoreceptors to sense light: rods, cones, and intrinsically photosensitive retinal ganglion cells (ipRGCs). Rods and cones resolve details in the visual scene. Conversely, ipRGCs integrate over time and space, primarily to support "non-image" vision. The integrative mechanisms of ipRGCs are enigmatic, particularly since
Emanuel, Alan Joseph +1 more
openaire +2 more sources
Seasonal Variations in Adults with and without Cataracts [PDF]
, 2017 Seasonal adaptation is a ubiquitous behavior seen in many species on both global hemispheres and is conveyed by changing photoperiods. In humans this seasonal adaptation is less apparent, in part because changes in daylength are masked by the use of ...
Hashemi, Kattayoon +4 more
core +1 more source
Advanced Biology, Volume 9, Issue 12, December 2025.Infrared (IR) light evokes distinct calcium and water transport responses in astrocytes, depending on stimulation duration and protocol. This study uses widefield imaging and pharmacology to reveal differential engagement of astroglial signaling pathways.
Wilson R. Adams +7 more
wiley +1 more source