Results 131 to 140 of about 7,378 (211)

Mapping physiological inputs from multiple photoreceptor systems to dopaminergic amacrine cells in the mouse retina

open access: yesScientific Reports, 2017
In the vertebrate retina, dopamine is synthesized and released by a specialized type of amacrine cell, the dopaminergic amacrine cell (DAC). DAC activity is stimulated by rods, cones, and melanopsin-expressing intrinsically photosensitive retinal ...
Xiwu Zhao, Kwoon Y. Wong, Dao-Qi Zhang
doaj   +1 more source

Reported light in the sleep environment: enhancement of the sleep diary. [PDF]

open access: yes, 2019
BackgroundLight is the primary synchronizing cue for the circadian timing system, capable of exerting robust physiological effects, even with very dim and/or brief photic exposure. Mammals, including humans, are particularly susceptible to light at night.
Ancoli-Israel, Sonia   +4 more
core  

Visual Responses in Mice Lacking Critical Components of All Known Retinal Phototransduction Cascades [PDF]

open access: yes, 2010
The mammalian visual system relies upon light detection by outer-retinal rod/cone photoreceptors and melanopsin-expressing retinal ganglion cells. Gnat1(-/-); Cnga3(-/-); Opn4(-/-) mice lack critical elements of each of these photoreceptive mechanisms ...
Allen, AE   +4 more
core  

Funciones no visuales de la retina: Razones para cuidar la retina en la ceguera total [PDF]

open access: yes, 2016
La retina es una porción del sistema nervioso central formada por una red de neuronas especializadas que se localiza tapizando el interior del globo ocular. En este tejido, los estímulos luminosos desencadenan respuestas eléctricas y químicas que activan
Cuenca, Nicolás   +2 more
core   +1 more source

[Phototransduction mediated by melanopsin in intrinsically photosensitive retinal ganglion cells].

open access: yesGaceta medica de Mexico, 2016
Melanopsin is the most recent photopigment described. As all the other opsins, it attaches in the retina as chromophore. Its amino acid sequence resembles more invertebrate opsins than those of vertebrates. The signal transduction pathway of opsins in vertebrates is based on the coupling to the G protein transducin, triggering a signaling cascade that ...
Carlos Augusto, Domínguez-Solís   +1 more
openaire   +1 more source

Home - About - Disclaimer - Privacy