Results 51 to 60 of about 1,619 (156)
Molecular Ecology, Volume 35, Issue 20, October 2026.ABSTRACT Photopigments, formed by an opsin protein bound to a light‐sensitive chromophore, underlie vertebrate vision. Long‐wavelength–sensitive (LWS) opsins mediate red‐light detection, and most teleosts retain a single functional LWS1. A shorter‐shifted green‐sensitive paralog (LWS2) is found only in a few lineages.
Fabio Cortesi +7 more
wiley +1 more source
Characterization of an ocular photopigment capable of driving pupillary constriction in mice
, 2001 This work demonstrates that transgenic mice lacking both rod and cone photoreceptors (rd/rd cl) retain a pupillary light reflex (PLR) that does not rely on local iris photoreceptors.
Douglas, Ronald H. +5 more
core +1 more source
The Method of Silent Substitution for Examining Melanopsin Contributions to Pupil Control
Frontiers in Neurology, 2018 The human pupillary light response is driven by all classes of photoreceptors in the human eye—the three classes of cones, the rods, and the intrinsically photosensitive retinal ganglion cells (ipRGCs) expressing the photopigment melanopsin.
Manuel Spitschan, Tom Woelders
doaj +1 more source
The Kinetics of the Synthesis of Photopigments in Rhodopseudomonas spheroides [PDF]
Journal of General Microbiology, 1962 SUMMARY: The magnitude of self-shading in light-grown cultures of Rhodopseudomonas spheroides has been estimated. When a culture of R. spheroides is transferred from bright light to dim light there is preferential synthesis of bacteriochlorophyll and carotenoid pigments relative to net protein synthesis. Protein turnover does not account for this.
openaire +2 more sources
Advanced Healthcare Materials, Volume 15, Issue 36, 25 September 2026.In this study, we fabricate photovoltaic retinal implants with pyrolytic carbon electrodes and test their ability to stimulate mouse and pig retinas when illuminated with near‐infrared light. We find increased spiking activity in both animal models compared to spontaneous activity and TTX controls and analyze the spike amplitude, latency and frequency.
Akihiro Matsumoto +10 more
wiley +1 more source
, 1987 The carotenoid photopigment genes of the purple nonsulfur photosynthetic bacterium Rhodospeudomonas sphaeroides have been cloned into the kanamycin resistance transposon Tn 5 to create a carotenoid transposon-Tn 5-Crt+.
Pemberton J.M., Harding C.M.
core +1 more source
PLoS Computational Biology, 2020 For many species, vision is one of the most important sensory modalities for mediating essential tasks that include navigation, predation and foraging, predator avoidance, and numerous social behaviors.
Dharmeshkumar Patel +4 more
doaj +1 more source
Sensory Neuroscience, Volume 2, Issue 3, September 2026.Glaucoma is increasingly understood as a neurodegenerative disorder shaped by sleep and circadian physiology, not intraocular pressure alone. Sleep loss and obstructive sleep apnea suppress BDNF–TrkB neurotrophic signaling, impair sleep‐dependent glymphatic clearance, and trigger microglial neuroinflammation and vascular insult at the optic nerve head,
Karyme M. Alemán‐Villa +5 more
wiley +1 more source
From blue light to clock genes in zebrafish ZEM-2S cells.
PLoS ONE, 2014 Melanopsin has been implicated in the mammalian photoentrainment by blue light. This photopigment, which maximally absorbs light at wavelengths between 470 and 480 nm depending on the species, is found in the retina of all classes of vertebrates so far ...
Bruno C R Ramos +4 more
doaj +1 more source
The oscillatory response of the electroretinogram and neuronal adaptation
Acta Ophthalmologica, Volume 104, Issue 6, Page 616-637, September 2026.Abstract After more than 50 years, there still remains a challenge and an interest to know more as well as extend and deepen our understanding of the small rapid wavelets, the oscillatory potentials (OPs), of the electroretinogram (ERG) and the neuronal adaptation of the retina.
Lillemor Wachtmeister, Anders Eklund
wiley +1 more source