Results 31 to 40 of about 2,090 (184)

The retinal ipRGC-preoptic circuit mediates the acute effect of light on sleep [PDF]

Nature Communications, 2021
Abstract Light regulates daily sleep rhythms by a neural circuit that connects intrinsically photosensitive retinal ganglion cells (ipRGCs) to the circadian pacemaker, the suprachiasmatic nucleus. Light, however, also acutely affects sleep in a circadian-independent manner.
Ze Zhang, Corinne Beier, Tenley Weil, Samer Hattar   +3 more
openaire   +3 more sources

Cellular properties of intrinsically photosensitive retinal ganglion cells during postnatal development

Neural Development, 2019
Background Melanopsin-expressing, intrinsically photosensitive retinal ganglion cells (ipRGCs) respond directly to light and have been shown to mediate a broad variety of visual behaviors in adult animals.
Jasmine A. Lucas, Tiffany M. Schmidt
doaj   +1 more source

Burning the candle at both ends: Intraretinal signaling of intrinsically photosensitive retinal ganglion cells

Frontiers in Cellular Neuroscience, 2023
Intrinsically photosensitive retinal ganglion cells (ipRGCs) are photoreceptors located in the ganglion cell layer. They project to brain regions involved in predominately non-image-forming functions including entrainment of circadian rhythms, control of
Sushmitha Raja, Nina Milosavljevic, Annette E. Allen, Morven A. Cameron   +3 more
doaj   +1 more source

Melanopsin-Mediated Post-Illumination Pupillary Response in Idiopathic Rapid Eye Movement (REM) Sleep Behavior Disorder and Parkinson's Disease. [PDF]

Mov Disord
Abstract Aims To conduct a case–control study to investigate melanopsin‐mediated post‐illumination pupillary response (PIPR) in patients with Parkinson's disease (PD), video‐polysomnography‐confirmed isolated/idiopathic rapid eye movement (REM) sleep behavior disorder (iRBD), and age‐matched healthy controls (HC). Methods PIPR was measured at 6 s after
Chan JWY, Huang B, Gong S, Yang Y, Tang S, Chau SW, Chan NY, Li TM, Liu Y, Chan AYY, Ma KKY, Li SX, Tsoh J, Chong KKL, Roecklein KA, Mok VCT, Wing YK.   +16 more
europepmc   +2 more sources

The effect of intrinsically photosensitive retinal ganglion cell (ipRGC) stimulation on axial length changes to imposed optical defocus in young adults

, 2022
PURPOSE: The intrinsically photosensitive retinal ganglion cells (ipRGCs) regulate pupil size and circadian rhythms. Stimulation of the ipRGCs using short-wavelength blue light causes a sustained pupil constriction known as the post-illumination pupil ...
Collins, Michael J.,, Chakraborty, Ranjay,, Baskaran, Karthikeyan,, Chakraborty, R, Chakraborty, Ranjay, Yi, Fan,, Collins, Michael J., Kricancic, Henry,, Collins, MJ, Davis, B, Davis, Brett, Alonso-Caneiro, D, Yi, F, Baskaran, Karthikeyan, Baskaran, K, Alonso-Caneiro, David, Davis, Brett,, Kricancic, H, Kricancic, Henry, Yi, Fan, Alonso-Caneiro, David,, Karthikeyan Baskaran, Fan Yi, Michael J. Collins, David Alonso-Caneiro, Ranjay Chakraborty, Henry Kricancic, Brett Davis   +27 more
core   +1 more source

Validation of spectral simulation tools in the context of ipRGC-influenced light responses of building occupants [PDF]

, 2022
With the growing awareness about ipRGC-influenced light (IIL) responses, design applications related to these responses are flourishing. To compare design options and optimize lighting conditions for building occupants, lighting simulations are typically
Pierson, Clotilde, Andersen, Marilyne, Aarts, Marielle P. J.   +2 more
core   +2 more sources

A Review of Silent Substitution Devices for Melanopsin Stimulation in Humans

Photonics, 2020
One way to study the specific response of the non-visual melanopsin photoreceptors of the human eye is to silence the response of cones and rods. Melanopsin photoreceptors (ipRGC), highlighted in the early 2000s, are intimately linked to the circadian ...
Vincent Conus, Martial Geiser
doaj   +1 more source

An ipRGC-Influenced/Non-Visual Spectral Occupant Model (iNSOM) for Lighting Design, Part 1: Light Simulation Method [PDF]

Lighting Research and Technology
Alstan Jakubiec, Athina Alight
exaly   +2 more sources

The intrinsically photosensitive retinal ganglion cell (ipRGC) mediated pupil response in young adult humans with refractive errors

, 2021
Purpose The intrinsically photosensitive retinal ganglion cells (ipRGCs) signal environmental light, with axons projected to the midbrain that control pupil size and circadian rhythms.
Collins, Michael J.,, Chakraborty, Ranjay,, Baskaran, Karthikeyan,, Moderiano, Daniel,, Chakraborty, R, Chakraborty, Ranjay, Moderiano, D, Yi, Fan,, Collins, Michael J., Kricancic, Henry,, Collins, MJ, Moderiano, Daniel, Davis, B, Davis, Brett, Alonso-Caneiro, D, Yi, F, Baskaran, Karthikeyan, Baskaran, K, Alonso-Caneiro, David, Davis, Brett,, Kricancic, H, Kricancic, Henry, Yi, Fan, Alonso-Caneiro, David,, Karthikeyan Baskaran, Fan Yi, Michael J. Collins, David Alonso-Caneiro, Ranjay Chakraborty, Daniel Moderiano, Henry Kricancic, Brett Davis   +31 more
core   +1 more source

A STORM of activity: Super-resolution imaging analysis of activity-dependent synaptic development in the circadian photoentrainment circuit [PDF]

, 2020
Circadian rhythmicity is a subconscious process that controls for many of our daily behaviors such as appetite and sleep. Controlled by the Suprachiasmatic Nucleus (SCN), the circadian rhythm is entrained to environmental light by a unique retinal ...
Fisk, Kyle A
core   +1 more source