The Two Sides of Perception (Cognitive Neuroscience)

Richard Ivry; Lynn C. Robertson

ISBN 10: 0262090341 / ISBN 13: 9780262090346

Published by The MIT Press, 1997

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Bibliographic Details

• Title: The Two Sides of Perception (Cognitive Neuroscience)
• Publisher: The MIT Press
• Publication Date: 1997
• Language: English
• ISBN 10: 0262090341
• ISBN 13: 9780262090346
• Binding: Hardcover
• Condition: New
• Weight: 35 ounces

About this title

Synopsis

Anatomically, the central nervous system looks remarkably symmetrical--from the relatively simple structures of the spinal cord to the extensively convoluted folds of the cerebral hemispheres. At the functional level, however, there are striking differences between the left and right hemispheres. Although popular writings attribute language abilities to the left hemisphere and spatial abilities to the right, differences in hemispheric function appear to be more subtle. According to Ivry and Robertson, asymmetries over a wide range of perceptual tasks reflect a difference in strength rather than kind, with both hemispheres contributing to the performance of complex tasks, whether linguistic or spatial.

After an historical introduction, the authors offer a cognitive neuroscience perspective on hemispheric specialization in perception. They propose that the two hemispheres differ in how they filter task-relevant sensory information. Building on the idea that the hemispheres construct asymmetric representations, the hypothesis provides a novel account of many laterality effects. A notable feature of the authors' work is their attempt to incorporate hemispheric specialization in vision, audition, music, and language within a common framework. In support of their theory, they review studies involving both healthy and neurologically impaired individuals. They also provide a series of simulations to demonstrate the underlying computational principles of their theory. Their work thus describes both the cognitive and neurological architecture of hemispheric asymmetries in perception.

About the Author

Richard B. Ivry is Professor of Psychology at the University of California, Berkeley. Lynn C. Robertson is Research Scientist in the Veteran's Administration and Professor in the Departments of Neurology and Psychiatry at the University of California, Davis.