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The purpose of the book is to provide a comprehensive overview of hemispheric differences in sensory and perceptual processing. The first section of the book deals directly with the intra- and inter-hemispheric processing of spatial and temporal frequencies in the visual modality. The second section addresses the initial interaction between sensory and cognitive mechanisms, dealing with how the left and right cerebral hemispheres differ in their computation and representation of sensory information. The third section covers how attentional mechanisms modulate the nature of perceptual processing in the cerebral hemispheres. Section four consists of a single chapter which reviews evidence suggesting a functional linkage between upper and right visual field processing, on the one hand, and lower and left visual field processing on the other.
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CEREBRAL ASYMMETRIES IN SENSORY AND PERCEPTUAL PROCESSING ADVANCES IN PSYCHOLOGY 123 editors." G. E. STELMACH R A. VROON ELSEVIER Amsterdam - Lausanne - New York - Oxford - Shannon - Singapore - Tokyo CEREBRAL ASYMMETRIES IN SENSORY AND PERCEPTUAL PROCESSING Edited by Stephen CHRISTMAN Department of Psychology University of Toledo Toledo, Ohio, USA 1997 ELSEVIER Amsterdam - Lausanne - New York - Oxford. Shannon - Singapore - Tokyo NORTH-HOLLAND ELSEVIER SCIENCE B.V. Sara Burgerhartstraat 25 EO. Box 211, 1000 AE Amsterdam, The Netherlands ISBN: 0 444 82510X 9 1997 Elsevier Science B.V. All rights reserved. No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording or otherwise, without the prior written permission of the publisher, Elsevier Science B.V., Copyright & Permissions Department, RO. Box 521, i 000 AM Amsterdam, The Netherlands. Special regulations for readers in the U.S.A. - This publication has been registered with the Copyright Clearance Center Inc. (CCC), 222 Rosewood Drive, Danvers, MA 01923. Information can be obtained from the CCC about conditions under which photocopies of parts of this publication may be made in the U.S.A. All other copyright questions, including photocopying outside of the U.S.A., should be referred to the copyright owner, Elsevier Science B.V., unless otherwise specified. No responsibility is assumed by the publisher for any injury and/or damage to persons or property as a matter of products liability, negligence or otherwise, or from any use or operation of any methods, products, instructions or ideas contained in the material herein. This book is printed on acid-free paper. Printed in The Netherlands Table of Contents Preface xi Contributors xviii SECTION I: SPATIAL/TEMPORAL FREQUENCY PROCESSING 1. Hemispheric Asymmetry in the Processing of Spatial Frequency: Experiments Using Gratings and Bandpass Filtering Stephen Christman Sinusoidal and Square-wave Stimuli 7 Compound Stimuli 12 Low-pass and Band-pass Filtered Stimuli Conclusions 23 References 26 19 2. Temporal Frequency Processing 31 Luciano Mecacci Hemispheric Asymmetries of Spatio-temporal Interaction: Electrophysiological Evidence 35 Reading Disability and Impairment in Processing Basic Spatio-temporal Information 44 Evidence from Brain-injured Patients 46 Conclusion 49 References 49 3. Interhemispheric Transfer of Spatial and Temporal Frequency Information 55 Nicoletta Berardi and Adriana Fiorentini Properties of Interhemispheric Commisures in Mammals Interactions between Sinusoidal Stimuli Presented in the Left or Right Visual Field 61 56 vi