Results 61 to 70 of about 78,413 (264)

Dynamical Adaptation in Photoreceptors [PDF]

, 2013
Adaptation is at the heart of sensation and nowhere is it more salient than in early visual processing. Light adaptation in photoreceptors is doubly dynamical: it depends upon the temporal structure of the input and it affects the temporal structure of ...
Rava Azeredo da Silveira (194129), Rava Azeredo da Silveira, Clark, Damon,, Damon A. Clark (319493), Azeredo da Silveira, Rava, Raphael Benichou, da Silveira, Rava Azeredo, Markus Meister, Benichou, Raphael, Damon A Clark, Meister, Markus, Clark, Damon A., Markus Meister (39890), Raphael Benichou (484948)   +13 more
core   +1 more source

Bio‐Inspired Object Retrieval via Proximity‐Guided Adaptive Thigmotactic Exploration and Neuromorphic Recognition

Advanced Robotics Research, EarlyView.
Sparse active‐infrared proximity sensing is coupled to an adaptive thigmotactic controller for camera‐inaccessible object retrieval. After grasping, receptor‐informed encoding transforms force, temperature, and wrist force–torque signals into spike trains for spiking neural network recognition.
Fengyi Wang, Nitish Thakor, Gordon Cheng
wiley   +1 more source

Aberrant hiPSCs-Derived from Human Keratinocytes Differentiates into 3D Retinal Organoids that Acquire Mature Photoreceptors

Cells, 2019
Human induced pluripotent stem cell (hiPSC)-derived three-dimensional retinal organoids are a new platform for studying the organoidogenesis. However, recurrent genomic aberration, acquired during generation of hiPSCs, limit its biomedical application ...
Rupendra Shrestha, Yao-Tseng Wen, Dah-Ching Ding, Rong-Kung Tsai   +3 more
doaj   +1 more source

The Relevance of Oxidative Stress in the Pathogenesis and Therapy of Retinal Dystrophies

Antioxidants, 2020
Retinal cell survival requires an equilibrium between oxygen, reactive oxygen species, and antioxidant molecules that counteract oxidative stress damage.
Elena B. Domènech, Gemma Marfany
doaj   +1 more source

Retinitis Pigmentosa GTPase Regulator (RPGR) protein isoforms in mammalian retina:insights into X-linked Retinitis Pigmentosa and associated ciliopathies [PDF]

, 2008
Mutations in the cilia-centrosomal protein Retinitis Pigmentosa GTPase Regulator (RPGR) are a frequent cause of retinal degeneration. The RPGR gene undergoes complex alternative splicing and encodes multiple protein isoforms. To elucidate the function of
Hurd, Toby W, Behnam, Babak, Margolis, Ben, Khanna, Hemant, Parapuram, Sunil K., Hurd, Toby W., He, Shirley, Parapuram, Sunil K, Swaroop, Anand   +8 more
core   +1 more source

A Pentaradial and Bilateral Combined Photoreception System in the Sea Cucumber is Mediated by a Blue Light‐Sensitive R‐Opsin

Advanced Science, EarlyView.
The sea cucumber Holothuria leucospilota detects blue and adjacent wavelengths of light via an r‐opsin with a maximum absorption at 459 nm. In the oral tentacles, papillae, and tube feet, distinct light‐sensing structures with specialized morphologies are formed, constituting a unique pentaradial and bilateral combined photoreception system.
Jiasheng Huang, Chunhua Ren, Zhou Qin, Yimeng Cui, Bingbing Zhang, Peng Luo, Xuan Wang, Yaoqi Xie, Xin Zhang, Aifen Yan, Yang Zhang, Dingding Fan, Yang Liu, Wenjie Pan, Xiao Jiang, Lihong Yuan, Haipeng Qin, David M. Irwin, Chaoqun Hu, Yang Liu, Ting Chen   +20 more
wiley   +1 more source

Synthetic Toll‐Like Receptors for Control of Innate Immunity With Far‐Red Light

Advanced Science, EarlyView.
Synthetic Toll‐like receptors (TLRs) are engineered by replacing their natural sensing regions with a far‐red‐light‐responsive module from a bacterial phytochrome. These synthetic receptors enable light‐controlled regulation of immune signaling in mammalian cells.
Anna V. Leopold, Vladislav V. Verkhusha
wiley   +1 more source

Visual coding in locust photoreceptors. [PDF]

, 2008
Information capture by photoreceptors ultimately limits the quality of visual processing in the brain. Using conventional sharp microelectrodes, we studied how locust photoreceptors encode random (white-noise, WN) and naturalistic (1/f stimuli, NS) light
Juusola, M.I., Faivre, O.C., Mikko Juusola, Faivre Olivier, Olivier Faivre, Juusola Mikko   +5 more
core   +1 more source

Vitamin B12 photoreceptors

, 2022
36 pags., 1 figs., 1 tab. -- Chapter SixPhotoreceptor proteins enable living organisms to sense light and transduce this signal into biochemical outputs to elicit appropriate cellular responses.
Montserrat Elías-Arnanz, Elías-Arnanz, Montserrat, Polanco, María Carmen, Pérez-Castaño, Ricardo, Ricardo Pérez-Castaño, Osete-Alcaraz, Lucía, Padmanabhan, Subramanian, Lucía Osete-Alcaraz, S. Padmanabhan, María Carmen Polanco   +9 more
core   +1 more source

Chiral Nanoparticles Suppress Inflammatory Infiltration to Promote Extracellular Matrix Remodeling for Ectopia Lentis Therapy

Advanced Science, EarlyView.
L‐cysteine‐configured chiral polyurethane nanoparticles suppress ocular inflammation and reduce extracellular matrix (ECM) degradation in ectopia lentis by regulating macrophages polarization and inhibiting nuclear factor kappa B signaling pathway. By promoting zonular fiber‐associated protein restoration and tissue repair, this minimally invasive ...
Yinuo Wen, Yan Yang, Haihan Gao, Yan Liu, Xinyue Wang, Linghao Song, Ruohong Li, Ao Miao, Jie Xu, Zhennan Zhao, Dan Li, Shenjie Peng, Linzhao Li, Min Zhang, Yonghang Liu, Liren Wang, Tianhui Chen, Yongxiang Jiang   +17 more
wiley   +1 more source