Visual Agnosia
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To See But Not To See
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Author : Glyn W. Humphreys
language : en
Publisher: Psychology Press
Release Date : 1987
To See But Not To See written by Glyn W. Humphreys and has been published by Psychology Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 1987 with Agnosia categories.
First published in 1987. Routledge is an imprint of Taylor & Francis, an informa company.
A Case Study In Visual Agnosia Revisited
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Author : Glyn Humphreys
language : en
Publisher: Psychology Press
Release Date : 2013-10-15
A Case Study In Visual Agnosia Revisited written by Glyn Humphreys and has been published by Psychology Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-10-15 with Psychology categories.
Visual agnosia is a rare but fascinating disorder of visual object recognition that can occur after a brain lesion. This book documents the case of John, who worked intensively with the authors for 26 years after acquiring visual agnosia following a stroke. It revisits John’s case over twenty years after it was originally described in the book To See But Not To See, in 1987. As in the previous book, the condition is illuminated by John and his wife, Iris, in their own words. A Case Study in Visual Agnosia Revisited discusses John’s case in the context of research into the cognitive neuroscience of vision over the past twenty years. It shows how John’s problems in recognition can provide important insights into the way that object recognition happens in the brain, with the results obtained in studies of John’s perception being compared to emerging work from brain imaging in normal observers. The book presents a much fuller analysis of the variety of perceptual problems that John experienced, detailing not only his impaired object recognition but also his face processing, his processing of different visual features (colour, motion, depth), his ability to act on and negotiate his environment, and his reading and writing. A Case Study in Visual Agnosia Revisited will be a key reference for those concerned with understanding how vision is implemented in the brain. It will be suitable for both undergraduate students taking courses in cognitive psychology and neuropsychology, and also researchers in the cognitive neuroscience of vision. The presentation of John’s case, and the human aspects of the disorder, will also be of great interest to a general audience of lay people interested in perception.
Visual Agnosia Second Edition
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Author : Martha J. Farah
language : en
Publisher: MIT Press
Release Date : 2004-04-09
Visual Agnosia Second Edition written by Martha J. Farah and has been published by MIT Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2004-04-09 with Medical categories.
The cognitive neuroscience of human vision draws on two kinds of evidence: functional imaging of normal subjects and the study of neurological patients with visual disorders. Martha Farah's landmark 1990 book Visual Agnosia presented the first comprehensive analysis of disorders of visual recognition within the framework of cognitive neuroscience, and remains the authoritative work on the subject. This long-awaited second edition provides a reorganized and updated review of the visual agnosias, incorporating the latest research on patients with insights from the functional neuroimaging literature. Visual agnosia refers to a multitude of different disorders and syndromes, fascinating in their own right and valuable for what they can tell us about normal human vision. Some patients cannot recognize faces but can still recognize other objects, while others retain only face recognition. Some see only one object at a time; others can see multiple objects but recognize only one at a time. Some do not consciously perceive the orientation of an object but nevertheless reach for it with perfected oriented grasp; others do not consciously recognize a face as familiar but nevertheless respond to it autonomically. Each disorder is illustrated with a clinical vignette, followed by a thorough review of the case report literature and a discussion of the theoretical implications of the disorder for cognitive neuroscience. The second edition extends the range of disorders covered to include disorders of topographic recognition, and both general and selective disorders of semantic memory, as well as expanded coverage of face recognition impairments. Also included are a discussion of the complementary roles of imaging and patient-based research in cognitive neuroscience, and a final integrative chapter presenting the "big picture" of object recognition as illuminated by agnosia research.
A Reader In Visual Agnosia
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Author : Glyn Humphreys
language : en
Publisher: Psychology Press
Release Date : 2016-01-13
A Reader In Visual Agnosia written by Glyn Humphreys and has been published by Psychology Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2016-01-13 with Psychology categories.
The case study of John has provided a unique insight into the nature of visual agnosia and more broadly into the underlying processes which support human vision. After suffering a stroke, John had problems in recognizing common objects, faces, seeing colours, reading and finding his way around his environment. A Reader in Visual Agnosia brings together the primary scientific papers describing the detailed investigations for each visual problem which the authors carried out with John, known as patient HJA. This work was summarised initially in To See But Not To See (1987), and 26 years later in A Case Study in Visual Agnosia Revisited (2013). The chapters are divided into 6 parts corresponding to the key areas of investigation: Integrative visual agnosia Perception of global form Face perception Colour perception Word recognition Changes over time Each part contains a short introduction, written by the two leading researchers who worked with John, which highlights the relations between the papers and demonstrates the pathway of the case analysis. The book will be invaluable to students and researchers in visual cognition, cognitive neuropsychology and vision neuroscience.
Visual Agnosia
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Author : Martha J. Farah
language : en
Publisher: Bradford Books
Release Date : 1990
Visual Agnosia written by Martha J. Farah and has been published by Bradford Books this book supported file pdf, txt, epub, kindle and other format this book has been release on 1990 with Medical categories.
Visual Agnosia is a comprehensive and up-to-date review of disorders of higher vision that relates these disorders to current conceptions of higher vision from cognitive science, illuminating both the neuropsychological disorders and the nature of normal visual object recognition.Brain damage can lead to selective problems with visual perception, including visual agnosia the inability to recognize objects even though elementary visual functions remain unimpaired. Such disorders are relatively rare, yet they provide a window onto how the normal brain might accomplish the complex task of vision. Visual Agnosia reviews a century of case studies of higher-level visual deficits following brain damage, places them in the general context of current neuroscience, and draws relevant conclusions about the organization of normal visual processing. It is unique in drawing on research in cognitive psychology, computational vision, visual neurophysiology, and neuropsychology to interpret the agnosias and draw inferences from them about visual object recognition.Following a historical account of agnosia research, Visual Agnosia offers a taxonomy of a wide range of agnosia syndromes, describing and interpreting the syndromes in terms of the latest theoretical models of visual processing and ultimately bringing them to bear as evidence on a variety of questions in the study of higher vision.Martha J. Farah is Associate Professor of Psychology at Carnegie Mellon University. Visual Agnosia is included in the Issues in Biology of Language and Cognition series, edited by John Marshall.
Case Studies In The Neuropsychology Of Vision
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Author : Glyn W. Humphreys
language : en
Publisher: Psychology Press
Release Date : 2013-04-15
Case Studies In The Neuropsychology Of Vision written by Glyn W. Humphreys and has been published by Psychology Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2013-04-15 with Psychology categories.
One important means to understanding normal cognitive functions is the study of the breakdown of these functions following brain damage. This book provides reviews of major case studies dealing with the breakdown of visual perception and recognition, including the disorders of motion vision, colour vision, perceptual integration, perceptual classification, recognition of particular categories of object, semantic access from vision (in optic aphasia), and recognition impairments with relative sparing of imagery. The cases are discussed in the light of studies that have followed since, and the chapters provide a context in which the contributions of the case studies can be evaluated.
To See But Not To See A Case Study Of Visual Agnosia
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Author : University of London; M. Jane Riddoch North East London Polytechnic. Glyn W. Humphreys Birkbeck College
language : en
Publisher: Psychology Press
Release Date : 2017-08-02
To See But Not To See A Case Study Of Visual Agnosia written by University of London; M. Jane Riddoch North East London Polytechnic. Glyn W. Humphreys Birkbeck College and has been published by Psychology Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-08-02 with categories.
First published in 1987. Routledge is an imprint of Taylor and Francis, an informa company.
Visual Agnosia
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Author : Martha J. Farah
language : en
Publisher: MIT Press (MA)
Release Date : 1995
Visual Agnosia written by Martha J. Farah and has been published by MIT Press (MA) this book supported file pdf, txt, epub, kindle and other format this book has been release on 1995 with Visual agnosia categories.
Brain damage can lead to selective problems with visual perception, including visual agnosia-the inability to recognize objects even though elementary visual functions remain unimpaired. Visual Agnosia reviews all the recent records of this disorder, places these 100 or so case studies in the general context of current neuroscience, and draws relevant conclusions about the organization of normal visual processing.
Visual Object Processing
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Author : Glyn W. Humphreys
language : en
Publisher: Routledge
Release Date : 2017-03-27
Visual Object Processing written by Glyn W. Humphreys and has been published by Routledge this book supported file pdf, txt, epub, kindle and other format this book has been release on 2017-03-27 with Psychology categories.
Originally published in 1987, this book, attempted to bring together work by researchers concerned with the functional and neurological mechanisms underlying visual object processing, and the ways in which such mechanisms can be neurologically impaired. The editors termed it a ‘Cognitive Neuropsychological’ approach, because they believed it tried to relate evidence from neurological impairments of visual object processing to models of normal performance in a new and important way. Two broad aims are apparent. One is to test models of normal performance by evaluating how well the models account for the patterns of impairment and preservation of abilities that can occur following brain damage. The other is to use models of normal performance to further their understanding of acquired disorders of visual object processing. These aims distinguish the approach from neuropsychological work whose primary aim is to relate acquired deficits to the sites of damage, and from work in the field of cognitive psychology which attempts only to develop models of normal performance.
Readings In Agnosia
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Author : Richard K. Peach
language : en
Publisher: Longman Publishing Group
Release Date : 1986
Readings In Agnosia written by Richard K. Peach and has been published by Longman Publishing Group this book supported file pdf, txt, epub, kindle and other format this book has been release on 1986 with Medical categories.