Academic literature on the topic 'Methods photoreception'

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Journal articles on the topic "Methods photoreception"

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Lander, A., M. Burge, B. Thomas, A. Phillips, E. McGlashan, and S. Cain. "O023 Circadian Photoreception Influences Loss Aversion." Sleep Advances 5, Supplement_1 (2024): A9. https://doi.org/10.1093/sleepadvances/zpae070.023.

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Abstract Introduction Gambling behaviour is a growing societal problem. While previous work has explored how sound encourages gambling, an unexplored element that may play a role is the impact of circadian photoreception on cognitive processes underlying this behaviour. This study investigated the influence of circadian photoreception on loss aversion in gambling by altering the blue content of light while maintaining the same visual brightness (200 lux). Methods Fifteen participants (5 male, M = 20.40, SD = 2.03) completed an economic decision-making task under blue-enriched and blue-depleted
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Garza, Z. C. Félix, M. Born, P. A. J. Hilbers, N. A. W. van Riel, and J. Liebmann. "Visible Blue Light Therapy: Molecular Mechanisms and Therapeutic Opportunities." Current Medicinal Chemistry 25, no. 40 (2019): 5564–77. http://dx.doi.org/10.2174/0929867324666170727112206.

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Background: Visible light is absorbed by photoacceptors in pigmented and non-pigmented mammalian cells, activating signaling cascades and downstream mechanisms that lead to the modulation of cellular processes. Most studies have investigated the molecular mechanisms and therapeutic applications of UV and the red to near infrared regions of the visible spectrum. Considerably less effort has been dedicated to the blue, UV-free part of the spectrum. Objective: In this review, we discuss the current advances in the understanding of the molecular photoacceptors, signaling mechanisms, and correspond
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Converse, C. A. "Methods in neurosciences, Vol. 15; Photoreceptor cells." Neurochemistry International 25, no. 3 (1994): 301. http://dx.doi.org/10.1016/0197-0186(94)90074-4.

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Xiao, Yu-Shu, Min Gao, Jun-Ran Sun, et al. "Deletion of prominin-1 in mice results in disrupted photoreceptor outer segment protein homeostasis." International Journal of Ophthalmology 14, no. 9 (2021): 1334–44. http://dx.doi.org/10.18240/ijo.2021.09.07.

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AIM: To illustrate the underlying mechanism how prominin-1 (also known as Prom1) mutation contribute to progressive photoreceptor degeneration. METHODS: A CRISPR-mediated Prom1 knockout (Prom1-KO) mice model in the C57BL/6 was generated and the photoreceptor degeneration phenotypes by means of structural and functional tests were demonstrated. Immunohistochemistry and immunoblot analysis were performed to reveal the localization and quantity of related outer segment (OS) proteins. RESULTS: The Prom1-KO mice developed the photoreceptor degeneration phenotype including the decreased outer nuclea
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Rosinvil, Thaïna, Veronique Daneault, Gilles Vanderwalle, et al. "280 Is blue-enriched light more effective than red light to enhance vigilance and cognitive performance in Parkinson’s Disease?" Sleep 44, Supplement_2 (2021): A112—A113. http://dx.doi.org/10.1093/sleep/zsab072.279.

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Abstract Introduction Approximately 50% (between 16–74%) of adults with Parkinson’s disease (PD) show excessive daytime sleepiness. Besides its important role for vision, light conveys a powerful stimulating signal for alertness and cognition. Recent research has demonstrated that the blue part of light spectrum is the most efficient in enhancing vigilance and cognitive performance in young and older healthy individuals, thanks to a specific photoreception system within the eye which is particularly sensitive to blue wavelength. The aim of this pilot study was to compare the effects of blue-en
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Dubicanac, Marko, Julia Strueve, Nadine Mestre-Frances, Jean-Michel Verdier, Elke Zimmermann, and Marine Joly. "Photoperiodic regime influences onset of lens opacities in a non-human primate." PeerJ 5 (May 4, 2017): e3258. http://dx.doi.org/10.7717/peerj.3258.

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Background Opacities of the lens are typical age-related phenomena which have a high influence on photoreception and consequently circadian rhythm. In mouse lemurs, a small bodied non-human primate, a high incidence (more than 50% when >seven years) of cataracts has been previously described during aging. Previous studies showed that photoperiodically induced accelerated annual rhythms alter some of mouse lemurs’ life history traits. Whether a modification of photoperiod also affects the onset of age dependent lens opacities has not been investigated so far. The aim of this study was theref
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Стрельников, V. Strelnikov, Рогова, et al. "Macular Electroretinography and Methods of Retina Visualization in Diagnostics of Standard Stargardt Disease, Verified by Molecular Genetic Methods." Journal of New Medical Technologies. eJournal 8, no. 1 (2014): 1–8. http://dx.doi.org/10.12737/2827.

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The aim of the study was to assess the data concerning the modern methods of retina visualization (optical coherence tomography and autofluorescence) and its interrelation with the data concerning the modern elec-troretinographic methods for research of Stargardt desease, verified with the help of molecular genetic methods. It was found that the shift of macular electroretinogramm to the red stimulus correlates with the parameters of optic coherent tomography: inverse high correlation between the "transverse defect" and a-wave amplitude of macular electroretinogramm (r=-0,83, p
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Lessios, Nicolas. "Using electroretinograms and multi-model inference to identify spectral classes of photoreceptors and relative opsin expression levels." PeerJ 5 (July 21, 2017): e3595. http://dx.doi.org/10.7717/peerj.3595.

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Understanding how individual photoreceptor cells factor in the spectral sensitivity of a visual system is essential to explain how they contribute to the visual ecology of the animal in question. Existing methods that model the absorption of visual pigments use templates which correspond closely to data from thin cross-sections of photoreceptor cells. However, few modeling approaches use a single framework to incorporate physical parameters of real photoreceptors, which can be fused, and can form vertical tiers. Akaike’s information criterion (AICc) was used here to select absorptance models o
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Yusupov, Azamat, Mukhiddin Ziyoviddinov, Shavkat Mukhanov, and O. O. Sobirov. "FUNCTIONAL METHODS OF EARLY DIAGNOSTICS OF AGE MACULAR DEGENERATION.(LITERATURE REVIEW)." UZBEK MEDICAL JOURNAL Special issue, no. 2 (2021): 61–67. http://dx.doi.org/10.26739/2181-0664-2021-si-2-10.

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This article provides an unsystematic literature review devoted to analyzing the currently existing methods of functional diagnostics for age-related macular degeneration.The essence, advantages and disadvantages, and literature data on the use of such methods asphotostresstest, electrooculography, dark adaptation study, contrast sensitivity function assessment, light and color sensitivity study,electroretinographyand critical flicker fusion frequencyare described.Based on the analysis of literature data, itis shownthat currently, there is a need to searchfor informative and accessible methods
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Gudenas, Brian, Bernhard Englinger, Anthony P. Y. Liu, et al. "ETMR-14. THE SINGLE-CELL LANDSCAPE OF PINEOBLASTOMA IDENTIFIES AN ONCOGENIC PHOTORECEPTOR PROGRAM AS A TUMORIGENIC VULNERABILITY UNIFYING DISTINCT EMBRYONAL CNS TUMOR ENTITIES." Neuro-Oncology 26, Supplement_4 (2024): 0. http://dx.doi.org/10.1093/neuonc/noae064.184.

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Abstract BACKGROUND Pineoblastoma (PB) is a rare and aggressive childhood brain tumor with highly variable outcomes. PB is diagnostically characterized by expression of the photoreceptor identity transcription factor CRX, while tumors can be further classified into molecular subgroups (PB-miRNA1, PB-miRNA2, PB-MYC/FOXR2, and PB-RB1), each marked by unique clinico-molecular features. However, developmental origins of PB subgroup heterogeneity and mechanisms governing malignancy remain unknown. METHODS We assembled a single-nucleus RNA-sequencing cohort (n=25) of primary PB tumors, including cas
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Dissertations / Theses on the topic "Methods photoreception"

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Лопатченко, Борис Костянтинович, Борис Константинович Лопатченко, Borys Kostiantynovych Lopatchenko та А. В. Бочкарев. "Використання телевізійних систем в задачах нормалізації зображень". Thesis, Сумський державний університет, 2015. http://essuir.sumdu.edu.ua/handle/123456789/41142.

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Розпізнавання зорових картин - одна з найважливіших завдань в електронних пристроях обробки зображень. Для отримання сигналу про зорові картини використовуються різні методи фоторецепції. Найбільш часто застосовується метод сканування інформаційного поля або передавальної телевізійної трубкою або трубкою на основі CCD матриці. Отриманий відеосигнал обробляють згідно з алгоритмом, який використовується, або в аналоговій формі або, в даний час частіше, в цифровий.
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Krylov, Dmitri M. "Guanylyl cyclase activating protein-1 and its regulation of retinal guanylyl cyclases : a study by molecular biological methods and a novel mass spectrometry based method /." Thesis, Connect to this title online; UW restricted, 2001. http://hdl.handle.net/1773/9259.

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Le, Pallec Michel. "Technologie de photorécepteurs intégrés sur InP." Grenoble INPG, 1997. http://www.theses.fr/1997INPG0144.

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Ce memoire de these rend compte d'une etude de circuits integres optoelectroniques sur substrat inp dans le contexte des transmissions optiques par multiplexage de longueur d'onde. Le travail traite tous les aspects de la technologie d'un photorecepteur integre multicanaux : epitaxie movpe simultanee de transistors et de photodetecteurs pin gainas, etude des structures et des methodes d'elaboration donnant des dispositifs integres aussi performants que des composants discrets, mise en oeuvre d'un procede avec le minimum de niveaux de masques, aboutissant a une puce de tres petite taille (1,2 x
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Books on the topic "Methods photoreception"

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Fain, Gordon L. Sensory Transduction. Oxford University Press, 2019. http://dx.doi.org/10.1093/oso/9780198835028.001.0001.

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Sensory Transduction provides a thorough and easily accessible introduction to the mechanisms that each of the different kinds of sensory receptor cell uses to convert a sensory stimulus into an electrical response. Beginning with an introduction to methods of experimentation, sensory specializations, ion channels, and G-protein cascades, it provides up-to-date reviews of all of the major senses, including touch, hearing, olfaction, taste, photoreception, and the “extra” senses of thermoreception, electroreception, and magnetoreception. By bringing mechanisms of all of the senses together into
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Hargrave, Paul A. Photoreceptor Cells: Methods in Neurosciences, Vol. 15. Elsevier Science & Technology Books, 2013.

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(Editor), Steven J. Fliesler, and Oleg G. Kisselev (Editor), eds. Signal Transduction in the Retina (Methods in Signal Transduction Series). CRC, 2007.

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Book chapters on the topic "Methods photoreception"

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Ziegler, Thea, Charlotte Helene Schumacher, and Andreas Möglich. "Guidelines for Photoreceptor Engineering." In Methods in Molecular Biology. Springer New York, 2016. http://dx.doi.org/10.1007/978-1-4939-3512-3_27.

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Kumar, Arun, Ashley C. Kramer, and Ryan Thummel. "Models of Photoreceptor Degeneration in Adult Zebrafish." In Methods in Molecular Biology. Springer US, 2024. http://dx.doi.org/10.1007/978-1-0716-4087-6_5.

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Tang, Peter H., and Rosalie K. Crouch. "Sustained Delivery of Retinoids to Prevent Photoreceptor Death." In Methods in Molecular Biology. Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4939-2330-4_23.

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Benedetti, P. A. "Methods for the Microspectroscopic Investigation of Photoreceptive Structures." In Sensory Perception and Transduction in Aneural Organisms. Springer US, 1985. http://dx.doi.org/10.1007/978-1-4613-2497-3_5.

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Chesneau, Albert, Odile Bronchain, and Muriel Perron. "Conditional Chemogenetic Ablation of Photoreceptor Cells in Xenopus Retina." In Methods in Molecular Biology. Springer New York, 2018. http://dx.doi.org/10.1007/978-1-4939-8784-9_10.

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Dill, Holger, Bastian Linder, Anja Hirmer, and Utz Fischer. "Analysis of Photoreceptor Degeneration in the Zebrafish Danio rerio." In Methods in Molecular Biology. Humana Press, 2012. http://dx.doi.org/10.1007/978-1-62703-080-9_9.

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Adler, Leopold, Nicholas P. Boyer, Chunhe Chen, and Yiannis Koutalos. "Kinetics of Rhodopsin’s Chromophore Monitored in a Single Photoreceptor." In Methods in Molecular Biology. Springer New York, 2015. http://dx.doi.org/10.1007/978-1-4939-2330-4_21.

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Hau, Kwan-Leong, Amelia Lane, Rosellina Guarascio, and Michael E. Cheetham. "Eye on a Dish Models to Evaluate Splicing Modulation." In Methods in Molecular Biology. Springer US, 2022. http://dx.doi.org/10.1007/978-1-0716-2010-6_16.

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AbstractInherited retinal dystrophies, such as Leber congenital amaurosis, Stargardt disease, and retinitis pigmentosa, are characterized by photoreceptor dysfunction and death and currently have few treatment options. Recent technological advances in induced pluripotent stem cell (iPSC) technology and differentiation methods mean that human photoreceptors can now be studied in vitro. For example, retinal organoids provide a platform to study the development of the human retina and mechanisms of diseases in the dish, as well as being a potential source for cell transplantation. Here, we descri
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Yanai, Anat, Christopher Laver, Aaron W. Joe, and Kevin Gregory-Evans. "Efficient Production of Photoreceptor Precursor Cells from Human Embryonic Stem Cells." In Methods in Molecular Biology. Springer New York, 2013. http://dx.doi.org/10.1007/7651_2013_57.

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Mao, Yingyu, and Silvia C. Finnemann. "Analysis of Photoreceptor Outer Segment Phagocytosis by RPE Cells in Culture." In Methods in Molecular Biology. Humana Press, 2012. http://dx.doi.org/10.1007/978-1-62703-080-9_20.

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Conference papers on the topic "Methods photoreception"

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Gecer, Elifnaz, Karin C. H. J. Smolders, Luc J. M. Schlangen, and Yvonne A. W. De Kort. "Designing Metameric Light: Advanced Methods for Isolated Photoreceptor Response and Testing NIF Effects of Light." In 2024 IEEE Sustainable Smart Lighting World Conference & Expo (LS24). IEEE, 2024. https://doi.org/10.1109/ls2463127.2024.10881661.

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Pratt, James K., Hasan Mutlu, H. Heil, B. Hofmann, N. Schmidt, and J. Segain. "Photoreceptor Optimization Via Taguchi Methods." In SAE International Congress and Exposition. SAE International, 1987. http://dx.doi.org/10.4271/870276.

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Geller, Andrew M., and Paul A. Sieving. "Psychophysical Census of Foveal Cones in Macular Degeneration." In Noninvasive Assessment of the Visual System. Optica Publishing Group, 1993. http://dx.doi.org/10.1364/navs.1993.nmb.1.

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We have developed a method and models to quantify photoreceptor loss and physiological change in patients with macular degeneration. We initially considered a metric based on the correlation between acuity and photoreceptor sampling rate in foveal and near parafoveal vision of normal observers1. Ultimately, however, when comparing results of a task with simulated photoreceptor loss2 to those of a conventional acuity vs. eccentricity task3, we realized this metric was untenable. In the case of eccentric viewing, the sampling rate of the receptor array decreases together with mean photoreceptor
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Fechtig, Daniel J., Laurin Ginner, Abhishek Kumar, et al. "Retinal photoreceptor imaging with high-speed line-field parallel spectral domain OCT (Conference Presentation)." In Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XX, edited by Joseph A. Izatt, James G. Fujimoto, and Valery V. Tuchin. SPIE, 2016. http://dx.doi.org/10.1117/12.2214719.

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Inoue, Keiichi. "Natural Photoreceptive-Protein Toolbox of Microbial Rhodopsins." In Conference on Lasers and Electro-Optics/Pacific Rim. Optica Publishing Group, 2022. http://dx.doi.org/10.1364/cleopr.2022.ctha15f_01.

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Rhodopsin is a photoreceptive membrane protein functioning as a photosensor in our eyes. Also, a large distinctive family of a different type of rhodopsin in unicellular microorganism, which is called “microbial rhodopsin” is known. Microbial rhodopsins exhibit a variety of biological function upon light absorption: light-driven ion pump, light-gated ion channel, phototactic sensor, gene regulation of photosynthetic pigment proteins, light-dependent enzyme and so on. Recently, those functions of microbial rhodopsins are used in optogenetics, a new biological technology to manipulate various ph
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Hüttmann, Gereon M., Clara Pfäffle, Hendrik Spahr, et al. "Improved functional imaging of ganglion neuronal and photoreceptor cell layers in living human retina (Conference Presentation)." In Optical Coherence Tomography and Coherence Domain Optical Methods in Biomedicine XXIV, edited by Joseph A. Izatt and James G. Fujimoto. SPIE, 2020. http://dx.doi.org/10.1117/12.2549083.

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Korchemskaya, Elena Y., and Nikolai M. Burykin. "Holographic methods of detection and analysis of small vibrations using biological photoreceptor bacteriorhodopsin." In 4th International Conference on Vibration Measurement by Laser Techniques, edited by Enrico P. Tomasini. SPIE, 2000. http://dx.doi.org/10.1117/12.386719.

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Nagy, B., P. Seres, and M. Telles Salgueiro Barboni. "DARK ADAPTATION MODELING." In CIE 2023 Conference. International Commission on Illumination, CIE, 2023. http://dx.doi.org/10.25039/x50.2023.po126.

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The human eye adapts to low light conditions based on photoreceptor sensitivity and adjustment ability. Low light situations on a daily basis may include driving in the dark or the illumination of various public spaces; therefore, getting to understand the adaptation process and the photopic, mesopic and scotopic functionalities of visual adaptation is of great significance. In this study psychophysical dark-adaptometry (DA) measurement was used to determine the photoreceptor thresholds after an initial full field bleaching (7000 cd/m2). Our aim was to determine the specific DA parameters such
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Wojtkowski, Maciej, Slawomir Tomczewski, Piotr Węgrzyn, and Andrea Curatolo. "Flicker optoretinography (f-ORG) with chirped frequency stimulus for retinal tissue characterisation." In Bio-Optics: Design and Application. Optica Publishing Group, 2023. http://dx.doi.org/10.1364/boda.2023.jtu4b.5.

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We used the flicker ORG method with a variable frequency stimulus to measure the frequency characteristics of photoreceptor activity. Data are collected using a Spatio-Temporal Optical Coherence Tomographic (STOC-T) system. We use a white-light LED for stimulation, which is driven by a linear chirped signal (5 Hz to 45 Hz). This approach allows much faster response measurements across the available spectrum than performing data acquisition at individual frequencies.
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Chen, Yiwei, Yi He, Jing Wang, et al. "Automated ensemble method for merging retinal photoreceptor identification results on adaptive optics scanning laser ophthalmoscope images." In 2022 4th International Academic Exchange Conference on Science and Technology Innovation (IAECST). IEEE, 2022. http://dx.doi.org/10.1109/iaecst57965.2022.10062164.

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