Neural Mechanisms of Color Vision
Neural Mechanisms of Color Vision

Author: Bevil Richard Conway

Publisher: Springer Science & Business Media

Published: 2013-03-14

Total Pages: 155

ISBN-13: 1475759533

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Dr. Conway mapped the spatial and temporal structure of the cone inputs to single neurons in the primary visual cortex of the alert macaque. Color cells had receptive fields that were often Double-Opponent, an organization of spatial and chromatic opponency sufficient to form the basis for color constancy and spatial color contrast. Almost all color cells gave a bigger response to color when preceded by an opposite color, suggesting that these cells also encode temporal color contrast. In sum, color perception is likely subserved by a subset of specialized neurons in the primary visual cortex. These cells are distinct from those that likely underlie form and motion perception. Color cells establish three color axes sufficient to describe all colors; moreover these cells are capable of computing spatial and temporal color contrast - and probably contribute to color constancy computations - because the receptive fields of these cells show spatial and temporal chromatic opponency.

Handbook of Color Psychology
Handbook of Color Psychology

Author: Andrew J. Elliot

Publisher: Cambridge University Press

Published: 2015-12-17

Total Pages: 1737

ISBN-13: 1316395332

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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.

Neurophysiological Aspects of Color Vision in Primates
Neurophysiological Aspects of Color Vision in Primates

Author: E. Zrenner

Publisher: Springer Science & Business Media

Published: 2012-12-06

Total Pages: 235

ISBN-13: 3642876064

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"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.

Perceptual Organization in Vision
Perceptual Organization in Vision

Author: Ruth Kimchi

Publisher: Psychology Press

Published: 2003-09-12

Total Pages: 488

ISBN-13: 1135647240

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An exploration of ideas emanating from behavioural, developmental, neurophysiological, neuropsychological and computational approaches to the problem of visual perceptual organization. It is based on papers presented at the 31st Carnegie Symposium on Cognition, held in June 2000.

Color Vision
Color Vision

Author: Karl R. Gegenfurtner

Publisher: Cambridge University Press

Published: 2001-05-28

Total Pages: 492

ISBN-13: 9780521004398

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Color Vision, first published in 2000, defines the state of knowledge about all aspects of human and primate color vision.

Neural Timing and Patterns of Color Vision
Neural Timing and Patterns of Color Vision

Author: Hannah Lee

Publisher:

Published: 2011

Total Pages: 14

ISBN-13: 9781124724157

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Visual perception helps us navigate through the world full of sensory information. The method by which the neural system organizes and modulates information has been studied but still remains elusive. To investigate how our brain encodes sensory information, we targeted color since it is one of the rudimentary features of vision. Using event-related potential (ERP), we tested healthy participants with normal color vision and instructed them with tasks of viewing isoluminant colored squares while focusing on a certain color to press a button. Also, another task of viewing colored squares and graphemes was given while participants were focusing on a certain grapheme to focus. Results show that the brain has a distinct pattern for each color in regards to amplitude of potential after 60 ms of onset. Our results give a glimpse of V4 activation time as well as the existence of the brain`s mechanism to encode colors. The encoding of color may be orchestrated by the activation of different V4 neurons, the frequencies of V4 neurons, or location of the V4 neurons. Also, our studies introduce a decoding difference between different compartments of the visual cortex; the color effect on potential amplitude and activation timing differs on different activation time windows. Between the external stimulus of light and the perception of color, distinct decoding mechanisms of color seem to occur in different compartments of the brain.

Human Color Vision
Human Color Vision

Author: Jan Kremers

Publisher: Springer

Published: 2016-12-06

Total Pages: 368

ISBN-13: 3319449788

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Our understanding of human color vision has advanced tremendously in recent years, helped along by many new discoveries, ideas, and achievements. It is therefore timely that these new developments are brought together in a book, assembled specifically to include new research and insight from the leaders in the field. Although intentionally not exhaustive, many aspects of color vision are discussed in this Springer Series in Vision Research book including: the genetics of the photopigments; the anatomy and physiology of photoreceptors, retinal and cortical pathways; color perception; the effects of disorders; theories on neuronal processes and the evolution of human color vision. Several of the chapters describe new, state-of-the-art methods within genetics, morphology, imaging techniques, electrophysiology, psychophysics, and computational neuroscience. The book gives a comprehensive overview of the different disciplines in human color vision in a way that makes it accessible to specialists and non-specialist scientists alike. About the Series: The Springer Series in Vision Research is a comprehensive update and overview of cutting edge vision research, exploring, in depth, current breakthroughs at a conceptual level. It details the whole visual system, from molecular processes to anatomy, physiology and behavior and covers both invertebrate and vertebrate organisms from terrestrial and aquatic habitats. Each book in the Series is aimed at all individuals with interests in vision including advanced graduate students, post-doctoral researchers, established vision scientists and clinical investigators. The series editors are N. Justin Marshall, Queensland Brain Institute, The University of Queensland, Australia and Shaun P. Collin, Neuroecology Group within the School of Animal Biology and the Oceans Institute at the University of Western Australia.