Mechanisms of Color Processing in the Retina PDF Download
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Author: Mohammad Hossein Khani
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
In the sensory system, many neurons are specified to detect different environmental signals and transfer the signals to downstream neurons. These downstream neurons integrate the detected signals and generate an output that is evolutionary relevant for the organism. In the retina, the photoreceptors are specified to detect light from the environment at different wavelength, thus separating the input light into different chromatic channels. The chromatic signals from the photoreceptors are integrated by downstream bipolar and ganglion cells. Although chromatic properties of the photoreceptor...
Author: Mohammad Hossein Khani
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
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Book Description
In the sensory system, many neurons are specified to detect different environmental signals and transfer the signals to downstream neurons. These downstream neurons integrate the detected signals and generate an output that is evolutionary relevant for the organism. In the retina, the photoreceptors are specified to detect light from the environment at different wavelength, thus separating the input light into different chromatic channels. The chromatic signals from the photoreceptors are integrated by downstream bipolar and ganglion cells. Although chromatic properties of the photoreceptor...
Author: Andrew J. Elliot
Publisher: Cambridge University Press
ISBN: 1316395332
Category : Psychology
Languages : en
Pages : 1737
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Book Description
We perceive color everywhere and on everything that we encounter in daily life. Color science has progressed to the point where a great deal is known about the mechanics, evolution, and development of color vision, but less is known about the relation between color vision and psychology. However, color psychology is now a burgeoning, exciting area and this Handbook provides comprehensive coverage of emerging theory and research. Top scholars in the field provide rigorous overviews of work on color categorization, color symbolism and association, color preference, reciprocal relations between color perception and psychological functioning, and variations and deficiencies in color perception. The Handbook of Color Psychology seeks to facilitate cross-fertilization among researchers, both within and across disciplines and areas of research, and is an essential resource for anyone interested in color psychology in both theoretical and applied areas of study.
Author: Helga Kolb
Publisher:
ISBN:
Category :
Languages : en
Pages :
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Book Description
Author: E. Zrenner
Publisher: Springer Science & Business Media
ISBN: 3642876064
Category : Medical
Languages : en
Pages : 235
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Book Description
"To explain all nature is too difficult a task for anyone man or even for anyone age. Tis much better to do a little with certainty, and leave the rest for others that come after you, than to explain all things ... " Sir Isaac Newton (1642-1727) This book describes and discusses some new aspects of col or vision in primates which have emerged from a series of experiments conducted over the past 8 years both on single ganglion cells in monkey retina and on the visually evoked cortical potential in man: corresponding psychophysical mechanisms of human perception will be considered as well. An attempt will be made to better understand the basic mechanisms of color vision using a more comprehensive approach which takes into account new mechanisms found in single cells and relates them to those found valid for the entire visual system. The processing of color signals was followed up from the retina to the visual cortex and to the percepq.tal centers, as far as the available techniques permitted.
Author: John E. Dowling
Publisher: Harvard University Press
ISBN: 0674247280
Category : Science
Languages : en
Pages : 610
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Book Description
John Dowling’s The Retina, published in 1987, quickly became the most widely recognized introduction to the structure and function of retinal cells. In this Revised Edition, Dowling draws on twenty-five years of new research to produce an interdisciplinary synthesis focused on how retinal function contributes to our understanding of brain mechanisms. The retina is a part of the brain pushed out into the eye during development. It retains many characteristics of other brain regions and hence has yielded significant insights on brain mechanisms. Visual processing begins there as a result of neuronal interactions in two synaptic layers that initiate an analysis of space, color, and movement. In humans, visual signals from 126 million photoreceptors funnel down to one million ganglion cells that convey at least a dozen representations of a visual scene to higher brain regions. The Revised Edition calls attention to general principles applicable to all vertebrate retinas, while showing how the visual needs of different animals are reflected in their retinal variations. It includes completely new chapters on color vision and retinal degenerations and genetics, as well as sections on retinal development and visual pigment biochemistry, and presents the latest knowledge and theories on how the retina is organized anatomically, physiologically, and pharmacologically. The clarity of writing and illustration that made The Retina a book of choice for a quarter century among graduate students, postdoctoral fellows, vision researchers, and teachers of upper-level courses on vision is retained in Dowling’s new easy-to-read Revised Edition.
Author: Karl R. Gegenfurtner
Publisher: Cambridge University Press
ISBN: 9780521004398
Category : Medical
Languages : en
Pages : 492
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Book Description
Color Vision, first published in 2000, defines the state of knowledge about all aspects of human and primate color vision.
Author: Kirill A. Martemyanov
Publisher: Springer
ISBN: 1493912186
Category : Medical
Languages : en
Pages : 197
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Book Description
The main purpose of this volume is to provide a focused analysis of the function of the G protein-coupled signaling pathways that operate in the interconnected network of retinal neurons as they detect and encode the information carried by light. The organization of this volume will generally follow the path of signal flow in the retina. First we will describe recent advances in understanding the phototransduction cascade of rod and cone photoreceptors, which use signaling cascade based on the GPCR rhodopsin to transduce incident light into neural activity. Chapters will be devoted to unique specializations of the two major types of photosensitive cells that comprise the predominant input for our spatial and color vision. Subsequently, the mechanisms of synaptic information encoding by retinal ON bipolar cells will be described, where the GPCR mGluR6 plays a fundamental role. Chapters in this section will examine macromolecular organization of the mGluR6 signaling pathway as well as current understanding of its function. The functional characteristics of this signaling mechanism will be explored in detail. Additionally, this section will cover the role of dopamine receptors in modulating signal transmission between photoreceptors and ON-bipolar cells. Finally, chapters will be focused on the output neurons of the inner retina, ganglion cells, where the components of the emerging GPCR melanopsin cascade in intrinsically photosensitive ganglion cells will be detailed. Collectively these mechanisms allow the retina to represent visual space over a wide range of light intensities.
Author: Naveen Challa
Publisher:
ISBN: 9783659343445
Category :
Languages : en
Pages : 292
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Book Description
Author: David Ottoson
Publisher: Springer
ISBN: 1349080209
Category : Science
Languages : en
Pages : 244
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Book Description
Author: Greg Schwartz
Publisher: Academic Press
ISBN: 0128231777
Category : Medical
Languages : en
Pages : 342
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Book Description
Retinal Computation summarizes current progress in defining the computations performed by the retina, also including the synaptic and circuit mechanisms by which they are implemented. Each chapter focuses on a single retinal computation that includes the definition of the computation and its neuroethological purpose, along with the available information on its known and unknown neuronal mechanisms. All chapters contain end-of-chapter questions associated with a landmark paper, as well as programming exercises. This book is written for advanced graduate students, researchers and ophthalmologists interested in vision science or computational neuroscience of sensory systems. While the typical textbook's description of the retina is akin to a biological video camera, the real retina is actually the world’s most complex image processing machine. As part of the central nervous system, the retina converts patterns of light at the input into a rich palette of representations at the output. The parallel streams of information in the optic nerve encode features like color, contrast, orientation of edges, and direction of motion. Image processing in the retina is undeniably complex, but as one of the most accessible parts of the central nervous system, the tools to study retinal circuits with unprecedented precision are up to the task. This book provides a practical guide and resource about the current state of the field of retinal computation. Provides a practical guide on the field of retinal computation Summarizes and clearly explains important topics such as luminance, contrast, spatial features, motion and other computations Contains discussion questions, a landmark paper, and programming exercises within each chapter
