Results 21 to 30 of about 72,833 (298)

Early Detection of Central Visual Function Decline in Cone-Rod Dystrophy by the Use of Macular Focal Cone Electroretinogram [PDF]

open access: yes, 2013
PURPOSE. To evaluate macular focal cone ERG (fERG) as a tool for reliable and early detection of central retinal function decay in cone–rod dystrophy (CRD). METHODS. A retrospective study of the time course of fERG amplitude and its relation to visual
Placidi Giorgio   +8 more
core   +2 more sources

AAV-mediated cone rescue in a naturally occurring mouse model of CNGA3-achromatopsia. [PDF]

open access: yesPLoS ONE, 2012
Achromatopsia is a rare autosomal recessive disorder which shows color blindness, severely impaired visual acuity, and extreme sensitivity to bright light.
Ji-jing Pang   +16 more
doaj   +1 more source

S-cone signals invisible to the motion system can improve motion extraction via grouping by color [PDF]

open access: yes, 2009
Peer ...
Martinovic, Jasna   +3 more
core   +1 more source

Colour opponency is widespread across the mouse subcortical visual system and differentially targets GABAergic and non-GABAergic neurons

open access: yesScientific Reports, 2023
Colour vision plays many important roles in animal behaviour but the brain pathways processing colour remain surprisingly poorly understood, including in the most commonly used laboratory mammal, mice.
R. C. Feord   +4 more
doaj   +1 more source

Visual enhancement of Cone‐beam CT by use of CycleGAN [PDF]

open access: yesMedical Physics, 2020
PurposeCone‐beam computed tomography (CBCT) offers advantages over conventional fan‐beam CT in that it requires a shorter time and less exposure to obtain images. However, CBCT images suffer from low soft‐tissue contrast, noise, and artifacts compared to conventional fan‐beam CT images.
Kida, S.   +8 more
openaire   +3 more sources

The Brightness of Colour [PDF]

open access: yes, 2009
Background: The perception of brightness depends on spatial context: the same stimulus can appear light or dark depending on what surrounds it. A less well-known but equally important contextual phenomenon is that the colour of a stimulus can also alter ...
Haynes, J.   +15 more
core   +1 more source

Visual acuity in the blue cone monochromat [PDF]

open access: yesThe Journal of Physiology, 1972
1. To isolate the blue cones of the normal eye, blue sine‐wave gratings were superimposed on a bright yellow background. Threshold contrasts for resolution of the gratings were then determined.2. Under these conditions visual acuity for high contrast gratings on four normal subjects was on the average 0·31 min−1.
openaire   +2 more sources

Optical coherence tomography findings in unilateral peripheral cone dysfunction syndrome: a case report

open access: yesBMC Ophthalmology, 2019
Introduction To report a case of unilateral peripheral cone dysfunction syndrome and evaluate the associated clinicopathological changes using swept-source optical coherence tomography (SS-OCT).
Tetsuya Hasegawa   +6 more
doaj   +1 more source

Visualizing Light Cones in Schwarzschild Space [PDF]

open access: yes, 2013
This paper introduces a numerical tool (using MATHLAB) to study light cones in exterior Schwarzschild spacetime. The tool in its present form, is mainly for pedagogical use in general relativity classes to help students understand the causal structure of a curved spacetime such as Schwarzschild.
Elmabrouk, Tarig, Low, Robert J.
openaire   +3 more sources

Variations in photoreceptor throughput to mouse visual cortex and the unique effects on tuning

open access: yesScientific Reports, 2021
Visual input to primary visual cortex (V1) depends on highly adaptive filtering in the retina. In turn, isolation of V1 computations requires experimental control of retinal adaptation to infer its spatio-temporal-chromatic output.
I. Rhim, G. Coello-Reyes, I. Nauhaus
doaj   +1 more source

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