Advances in Photoreception

Advances in Photoreception PDF Author: National Research Council
Publisher: National Academies Press
ISBN: 0309042402
Category : Medical
Languages : en
Pages : 157

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Book Description
One of a continuing series on Frontiers of Visual Science, this short volume contains papers presented at a recent symposium. These papers describe techniques for assessing the structure and function of photoreception, both in isolation and in aggregation as the "receptor mosaic" of the retina. Also described are dynamic and spatial sampling properties of photoreceptors, with an emphasis on techniques of measurement and associated models of retinal function. This volume should be of interest to basic vision scientists, clinical ophthalmologists, workers in human factors, and computer scientists curious about the visual apparatus of biological systems.

Advances in Photoreception

Advances in Photoreception PDF Author: National Research Council
Publisher: National Academies Press
ISBN: 0309042402
Category : Medical
Languages : en
Pages : 157

Get Book Here

Book Description
One of a continuing series on Frontiers of Visual Science, this short volume contains papers presented at a recent symposium. These papers describe techniques for assessing the structure and function of photoreception, both in isolation and in aggregation as the "receptor mosaic" of the retina. Also described are dynamic and spatial sampling properties of photoreceptors, with an emphasis on techniques of measurement and associated models of retinal function. This volume should be of interest to basic vision scientists, clinical ophthalmologists, workers in human factors, and computer scientists curious about the visual apparatus of biological systems.

Photoreceptor Cell Biology and Inherited Retinal Degenerations

Photoreceptor Cell Biology and Inherited Retinal Degenerations PDF Author: David S. Williams
Publisher: World Scientific
ISBN: 9789812561756
Category : Medical
Languages : en
Pages : 460

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Book Description
This important book presents review articles on the cell biology of photoreceptor and RPE cells, as well as the relationship between this cell biology and inherited photoreceptor degeneration. The chapters have been written by leaders in the field. The vision scientist will see this book as a review of photoreceptor and RPE cell biology, and known molecular bases of many forms of retinitis pigmentosa and related retinal degeneration.

Webvision

Webvision PDF Author: Helga Kolb
Publisher:
ISBN:
Category :
Languages : en
Pages :

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Book Description


Photoreceptors and Calcium

Photoreceptors and Calcium PDF Author: Wolfgang Baehr
Publisher: Springer Science & Business Media
ISBN: 9780306474156
Category : Medical
Languages : en
Pages : 658

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Book Description
Text reviews the understanding of the role of calcium in phototransduction, dark-and light-adaptation, recovery from bleaching and return from the dark state, and synaptic signaling of photoreceptors and their second-order neurons. Includes color plates.

Fish Larval Physiology

Fish Larval Physiology PDF Author: Roderick Nigel Finn
Publisher: CRC Press
ISBN: 1439842779
Category : Science
Languages : en
Pages : 741

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Book Description
This book is intended as a resource for students and researchers interested in developmental biology and physiology and specifically addresses the larval stages of fish. Fish larvae (and fish embryos) are not small juveniles or adults. Rather they are transitionary organisms that bridge the critical gap between the singlecelled egg and sexually immature juvenile. Fish larvae represent the stage of the life cycle that is used for differentiation, feeding and distribution. The book aims at providing a single-volume treatise that explains how fish larvae develop and differentiate, how they regulate salt, water and acid-base balance, how they transport and exchange gases, acquire and utilise energy, how they sense their environment, and move in their aquatic medium, how they control and defend themselves, and finally how they grow up.

Principles and Practice of Clinical Electrophysiology of Vision, second edition

Principles and Practice of Clinical Electrophysiology of Vision, second edition PDF Author: John R. Heckenlively
Publisher: MIT Press
ISBN: 0262083469
Category : Medical
Languages : en
Pages : 1033

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Book Description
The long-awaited second edition of an authoritative reference on electrophysiologic vision testing, including detailed information on techniques and problems, basic physiology and anatomy, theoretical concepts, and clinical findings; with extensive new material. This authoritative text is the only comprehensive reference available on electrophysiologic vision testing, offering both practical information on techniques and problems as well as basic physiology and anatomy, theoretical concepts, and clinical correlations. The second edition, of the widely used text, offers extensive new material and updated information: 65 of the 84 chapters are completely new, with the changes reflecting recent advances in the field. The book will continue to be an essential resource for practitioners and scholars from a range of disciplines within vision science. The contributions not only cover new information—important material that is likely to become more important in the next decade—but also offer a long-range perspective on the field and its remarkable development in the last century. After discussing the history and background of clinical electrophysiology, the book introduces the anatomy of the retina and principles of cell biology in the visual pathways at the molecular, physiological, and biochemical levels. It relates these new findings to the techniques and interpretations of clinical tests, including the electro-oculogram (EOG), electroretinogram (ERG), and visual evoked potentials (VEP), which are discussed in detail, as are equipment, data acquisition and analysis, principles and protocols for clinical testing, diseases and dysfunction, and animal testing. Notable additions for this edition include chapters on the origin of electroretinogram waveforms, multifocal techniques, testing in standard laboratory animals, recent advances in analysis of abnormalities in disease, and the applications of these techniques to the study of genetic abnormalities.

Photoreceptor Optics

Photoreceptor Optics PDF Author: A.W. Snyder
Publisher: Springer Science & Business Media
ISBN: 3642809340
Category : Science
Languages : en
Pages : 523

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Book Description
The above consideration indicates that at present many of the experi mental facts on PS in animals can be quantitatively explained within the limits of the "universal" photoreceptor membrane concept. Of course, existence of preferential orientation of the absorbing dipoles in the tubuli of the rhabdomeres can not be totally rejected. We hope that the concept of the "universal" photoreceptor membrane may serve as the useful instrument when dealing with newly discovered properties of visual cells so that true mechanisms of electrical and optical coupling will be searched for instead of assumptions being made on additional properties of the photoreceptor membrane in every new animal under study. 5. Absorption Spectrum of the Universal Photoreceptor Membrane and Spectral Sensitivity of the Photoreceptor 5. 1 Preliminary Notes It seems nearly self-evident that the absorption spectrum of the pho toreceptor membrane coincides exactly with that of the visual pigment it contains. Hence, the membrane must exhibit three bands of absorp tion - the principal band with its peak within the limits of visible spectrum (or a-peak); the secondary band between 340 and 380 nm (S peak); and the third, protein band, in the ultraviolet (UV) at 280 nm (COLLINS et al. , 1952). The main peak of absorption is located within the range 433-575 nm for retinol-based pigments and between 438 and 620 nm for 3-dehydroretinol-based pigments, the position of Amax de pending on many ecological factors.

Neurotransmitter Release

Neurotransmitter Release PDF Author: Hugo J. Bellen
Publisher: Oxford University Press, USA
ISBN:
Category : Medical
Languages : en
Pages : 466

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Book Description
This book provides the reader with background information on neurotransmitter release. Emphasis is placed on the rationale by which proteins are assigned specific functions rather than just providing facts about function.

Advances in Vision Research, Volume III

Advances in Vision Research, Volume III PDF Author: Gyan Prakash
Publisher: Springer Nature
ISBN: 9811591849
Category : Medical
Languages : en
Pages : 478

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Book Description
This third volume, with three supporting editors, broadens its focus on genetic eye research from the Asian to the global scale. New efforts and a new awareness have sparked important discussions on genetic eye research, and new plans are being implemented to identify the genes responsible for numerous eye diseases. The book introduces the latest findings on genetics in eye diseases, gene therapy, and genome-wide association analysis, and the efforts of the Global Eye Genetic Consortium (GEGC). The book’s editors have been instrumental in developing strategies for discovering the new genes involved in many eye diseases. All chapters were written by leading researchers working on eye genetics from the fields of Human Genetics, Ophthalmology, Molecular Biology, Biochemistry, Sensory Sciences, and Clinical Research. Advances in Vision Research, Volume III is a major resource for all researchers, clinicians, clinical researchers, and allied eye health professionals with an interest in eye diseases around the globe.

Vertebrate Photoreceptors

Vertebrate Photoreceptors PDF Author: Takahisa Furukawa
Publisher: Springer
ISBN: 9784431563358
Category : Medical
Languages : en
Pages : 0

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Book Description
This book provides a series of comprehensive views on various important aspects of vertebrate photoreceptors. The vertebrate retina is a tissue that provides unique experimental advantages to neuroscientists. Photoreceptor neurons are abundant in this tissue and they are readily identifiable and easily isolated. These features make them an outstanding model for studying neuronal mechanisms of signal transduction, adaptation, synaptic transmission, development, differentiation, diseases and regeneration. Thanks to recent advances in genetic analysis, it also is possible to link biochemical and physiological investigations to understand the molecular mechanisms of vertebrate photoreceptors within a functioning retina in a living animal. Photoreceptors are the most deeply studied sensory receptor cells, but readers will find that many important questions remain. We still do not know how photoreceptors, visual pigments and their signaling pathways evolved, how they were generated and how they are maintained. This book will make clear what is known and what is not known. The chapters are selected from fields of studies that have contributed to a broad understanding of the birth, development, structure, function and death of photoreceptor neurons. The underlying common word in all of the chapters that is used to describe these mechanisms is “molecule”. Only with this word can we understand how these highly specific neurons function and survive. It is challenging for even the foremost researchers to cover all aspects of the subject. Understanding photoreceptors from several different points of view that share a molecular perspective will provide readers with a useful interdisciplinary perspective.