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.
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