Results 41 to 50 of about 265,631 (295)
Functional evidence for cone-specific connectivity in the human retina [PDF]
, 2009 NoPhysiological studies of colour vision have not yet resolved the controversial issue of how chromatic opponency is constructed at a neuronal level. Two competing theories, the cone-selective hypothesis and the random-wiring hypothesis, are currently ...
McGraw, Paul V. +3 more
core +1 more source
The kinetics of cone visual pigments in man [PDF]
Vision Research, 1971 Abstract Rushton's general kinetic equation for human cone pigments is tested by estimating the photolysis rate at equilibrium from the initial photolysis rate and comparing it to the equilibrium rate of regeneration measured immediately after the bleaching light is turned off.
Alpern, Mathew +2 more
openaire +3 more sources
Asymmetries around the visual field: From retina to cortex to behavior.
PLoS Computational Biology, 2022 Visual performance varies around the visual field. It is best near the fovea compared to the periphery, and at iso-eccentric locations it is best on the horizontal, intermediate on the lower, and poorest on the upper meridian.
Eline R Kupers +3 more
doaj +1 more source
The retina visual cycle is driven by cis retinol oxidation in the outer segments of cones [PDF]
, 2017 Vertebrate rod and cone photoreceptors require continuous supply of chromophore for regenerating their visual pigments after photoactivation. Cones, which mediate our daytime vision, demand a particularly rapid supply of 11-cis retinal chromophore in ...
Cornwall, M. Carter +3 more
core +2 more sources
Visual acuity in the blue cone monochromat [PDF]
The 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
Primary structures of chicken cone visual pigments: vertebrate rhodopsins have evolved out of cone visual pigments. [PDF]
Proceedings of the National Academy of Sciences, 1992 The chicken retina contains rhodopsin (a rod visual pigment) and four kinds of cone visual pigments. The primary structures of chicken red (iodopsin) and rhodopsin have been determined previously. Here we report isolation of three cDNA clones encoding additional pigments from a chicken retinal cDNA library.
T, Okano +4 more
openaire +2 more sources
Retinoid isomerase inhibitors impair but do not block mammalian cone photoreceptor function [PDF]
, 2018 Visual function in vertebrates critically depends on the continuous regeneration of visual pigments in rod and cone photoreceptors. RPE65 is a well-established retinoid isomerase in the pigment epithelium that regenerates rhodopsin during the rod visual ...
Angueyra, Juan M +11 more
core +1 more source
Molecular Oncology, EarlyView.Nanosecond infrared laser (NIRL) low‐volume sampling combined with shotgun lipidomics uncovers distinct lipidome alterations in oropharyngeal squamous cell carcinoma (OPSCC) of the palatine tonsil. Several lipid species consistently differentiate tumor from healthy tissue, highlighting their potential as diagnostic markers.
Leonard Kerkhoff +11 more
wiley +1 more source
Colour and melanopsin mediated responses in the murine retina
Frontiers in Cellular Neuroscience, 2023 Introduction: Intrinsically photosensitive retinal ganglion cells (ipRGCs) integrate melanopsin and rod/cone-mediated inputs to signal to the brain. Whilst originally identified as a cell type specialised for encoding ambient illumination, several lines ...
Joshua W. Mouland +9 more
doaj +1 more source
Loss of Foveal Cone Structure Precedes Loss of Visual Acuity in Patients With Rod-Cone Degeneration. [PDF]
, 2019 PurposeTo assess the relationship between cone spacing and visual acuity in eyes with rod-cone degeneration (RCD) followed longitudinally.MethodsHigh-resolution images of the retina were obtained using adaptive optics scanning laser ophthalmoscopy from ...
Bensinger, Ethan +9 more
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