Results 61 to 70 of about 1,134 (113)

Modeling visual performance differences 'around' the visual field: A computational observer approach.

PLoS Computational Biology, 2019
Visual performance depends on polar angle, even when eccentricity is held constant; on many psychophysical tasks observers perform best when stimuli are presented on the horizontal meridian, worst on the upper vertical, and intermediate on the lower ...
Eline R Kupers, Marisa Carrasco, Jonathan Winawer   +2 more
doaj   +1 more source

A non-conducting role of the Cav1.4 Ca2+ channel drives homeostatic plasticity at the cone photoreceptor synapse

eLife
In congenital stationary night blindness, type 2 (CSNB2)—a disorder involving the Cav1.4 (L-type) Ca2+ channel—visual impairment is mild considering that Cav1.4 mediates synaptic release from rod and cone photoreceptors. Here, we addressed this conundrum
J Wesley Maddox, Gregory J Ordemann, Juan AM de la Rosa Vázquez, Angie Huang, Christof Gault, Serena R Wisner, Kate Randall, Daiki Futagi, Nihal A Salem, Dayne Mayfield, Boris V Zemelman, Steven DeVries, Mrinalini Hoon, Amy Lee   +13 more
doaj   +1 more source

Necl-1/CADM3 regulates cone synapse formation in the mouse retina

iScience
Summary: In vertebrates, retinal neural circuitry for visual perception is organized in specific layers. The outer plexiform layer is the first synaptic region in the visual pathway, where photoreceptor synaptic terminals connect with bipolar and ...
Rumi Kawashima, Kenji Matsushita, Kenji Mandai, Yuko Sugita, Tomohiko Maruo, Kiyohito Mizutani, Yoshihiro Midoh, Akiko Oguchi, Yasuhiro Murakawa, Kazuki Kuniyoshi, Ryohei Sato, Takahisa Furukawa, Kohji Nishida, Yoshimi Takai   +13 more
doaj   +1 more source

Visual adaptation and the cone flicker electroretinogram.

Investigative ophthalmology & visual science, 1991
This study examined the hypothesis that changes in the response properties of the human cone ERG during light adaptation represent the recovery of cone system responsiveness toward a dark-adapted value after an initial decrease in responsiveness at adapting field onset.
N S, Peachey, K R, Alexander, G A, Fishman   +2 more
openaire   +1 more source

Cone photoreceptor macular function and recovery after photostress in early non-exudative age-related macular degeneration

Clinical Ophthalmology, 2018
John D Rodriguez,1 Keith Lane,1 David A Hollander,1,2 Aron Shapiro,1 Sunita Saigal,1 Andrew J Hertsenberg,1 Garrick Wallstrom,3 Divya Narayanan,1 Endri Angjeli,1 Mark B Abelson1,4 1Ora, Inc., Andover, MA, USA; 2Jules Stein Eye Institute, University of ...
Rodriguez JD, Lane K, Hollander DA, Shapiro A, Saigal S, Hertsenberg AJ, Wallstrom G, Narayanan D, Angjeli E, Abelson MB   +9 more
doaj  

Cone Opsins and Inherited Retinal Disease

Cells
Opsins are the light receptors in retinal rod and cone photoreceptor cells that initiate vision in response to a light stimulus. Rhodopsin is the opsin in rods, and the influence of mutations that disrupt its structure and function has been characterized
Maya Tang, Paul S.-H. Park
doaj   +1 more source

Cone visual pigments.

Cone visual pigments.
Cone visual pigments are visual opsins that are present in vertebrate cone photoreceptor cells and act as photoreceptor molecules responsible for photopic vision. Like the rod visual pigment rhodopsin, which is responsible for scotopic vision, cone visual pigments contain the chromophore 11-cis-retinal, which undergoes cis-trans isomerization resulting
openaire  

Visual pigments of single goldfish cones [PDF]

The Journal of Physiology, 1965
openaire   +2 more sources

Electrophysiology for ophthalmologist (A practical approach)

Journal of Clinical Ophthalmology and Research, 2013
The article deals with the basic understanding of electrophysiological tests in clinical practice. Electrophysiological tests involves assessing the function of the rod-cone system and proximal visual pathway.
Deepak Bhatt
doaj  

Visual Acuity and the Cone Cell Distribution of the Retina [PDF]

British Journal of Ophthalmology, 1953
openaire   +2 more sources