Lab Publications

The Two Sides of Perception
Richard B. Ivry & Lynn C. Robertson
Published by MIT Press, 1998

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

TABLE OF CONTENTS
1. Introduction and Historical Overview

2. A theory of Hemispheric Asymmetries in Perception

3. Visual Perception: Lateralization in Simple and Complex Patterns

4. Attention and Visual Laterality

5. Auditory Perception

6. Speech Perception and Language

7. A Computer Implementation of the Double Filtering by Frequency Theory

8. The DDF Theory at Work

9. The Two Sides of Perception


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