Results 71 to 80 of about 1,619 (156)

The photopigment bleaching hypothesis of complementary after-images: A psychophysical test [PDF]

open access: yes, 1972
Normal observers color-adapted simultaneously to two spatially distinct sequences of light stimulation, equivalent in their bleaching effects but complementary to one another in hue.
Jack M. Loomis, Loomis, Jack M.
core   +1 more source

Multiphoton response of retinal rod photoreceptors

open access: yesElectronic Journal of Differential Equations, 2007
Phototransduction is the process by which light is converted into an electrical response in retinal photoreceptors. Rod photoreceptors contain a stack of (about 1000) disc membranes packed with photopigment rhodopsin molecules, which absorb the photons ...
Vasilios Alexiades, Harihar Khanal
doaj  

Blurring the Boundaries of Vision: Novel Functions of Intrinsically Photosensitive Retinal Ganglion Cells

open access: yesJournal of Experimental Neuroscience, 2013
Mammalian vision consists of the classic image-forming pathway involving rod and cone photoreceptors interacting through a neural network within the retina before sending signals to the brain, and a non image-forming pathway that uses a photosensitive ...
Anna Matynia
doaj   +1 more source

The Oxygen Consuption Depending on the Conformational State of Visual Pigment in Calliphora erythrocephala

open access: yesActa Biologica Slovenica, 1989
By determining the differential, light-induced oxygen consumption in blow-fly Calliphora erythrocephala (white-eyed) retinas, the fraction of the metabolic energy needed in the fly's eye for the processes other than those driving the ionic pumps was ...
Peter Stušek
doaj   +1 more source

Multiple opsin expression in cubozoan ocelli indicates functional redundancy

open access: yesScientific Reports
Box jellyfish have a complex visual system comprising 24 eyes of four morphological types. The visual functions of the two large image-forming lens eyes are well-understood; however, far less is known about the two lateral pairs of smaller eyes, the pit ...
Alison R. Irwin   +4 more
doaj   +1 more source

Photopigment coexpression in mammals: comparative and developmental aspects [PDF]

open access: yes, 2005
In mammals, each cone had been thought to contain only one single type of photopigment. It was not until the early 1990s that photopigment coexpression was reported. In the house mouse, the distribution of color cones shows a characteristic division.
Szél, A.   +4 more
core  

Data from Molluscan genomes reveal extensive differences in photopigment evolution across the phylum

open access: yes, 2023
These data are from the analysis described in the manuscript "Molluscan genomes reveal extensive differences in photopigment evolution across the phylum", accepted at Molecular Biology and Evolution.https://doi.org/10.1093/molbev/msad263README.txt ...
Kyle McElroy (16447284)
core   +1 more source

Light adaptation and photopigment bleaching in cone photoreceptors in situ in the retina of the turtle

open access: yes, 1994
Light adaptation and photopigment bleaching in cone photoreceptors were studied in the intact, superfused retina of the turtle (Pseudemys scripta elegans). A new method for measuring changes in the photopigment of cones is described.
DA Burkhardt
core   +1 more source

Differential stability of variant OPN1LW gene transcripts in myopic patients

open access: yesMolecular Vision, 2019
Purpose: In Bornholm eye disease, a defect in the splicing of transcripts from a variant OPN1LW opsin gene leads to a depletion in spliced transcript levels and, consequently, a reduction in photopigment in photoreceptors expressing the variant gene ...
Jessica K. Mountford   +5 more
doaj  

Invisible light inside the natural blind spot alters brightness at a remote location

open access: yesScientific Reports, 2018
The natural blind spot in the visual field has been known as a large oval region that cannot receive any optical input because it corresponds to the retinal optic disk containing no rod/cone-photoreceptors. Recently, stimulation inside the blind spot was
Marina Saito   +3 more
doaj   +1 more source

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