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Jul 2003
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ISBN
0262240440
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| 567 pp.
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| 174 illus.
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| The Parallel Brain |
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Eran Zaidel
and
Marco Iacoboni
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Hemispheric specialization is involved in every aspect of sensory, cognitive, and motor systems integration. Study of the corpus callosum, the bands of tissue uniting the brain's two hemispheres, is central to understanding neuroanatomy, neurophysiology, and behavior. It also brings the tools of hemispheric specialization to a fundamental problem of cognitive neuroscience: modularity and intermodular communication.
This book summarizes current research on the human corpus callosum. It also provides a comprehensive introduction to cognitive neuroscience. Rather than viewing the field through the various systems of the mind/brain such as perception, action, emotion, memory, language, and problem solving, it takes a case studies approach. Focusing on the central problem of simple reaction time, it examines the most basic possible sequence of perception-decision-action. The task is to press a button with one hand as soon as a patch of light is detected in the peripheral visual field. When the patch appears in the visual field opposite the responding hand, there must be interhemispheric transfer prior to response. But transfer of what--a visual input code? A cognitive decision code? A motor response code? Combining animal models, normal human studies, and clinical evidence, the authors apply anatomical, physiological, and behavioral perspectives to this question. The emerging view is that the corpus callosum consists of many parallel interhemispheric channels for communication and control, and that every transfer channel is context-dependent and modulated by attention.
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| Table of Contents |
| | Preface |
| | Introduction: Poffenberger's Simple Reaction Time Paradigm for Measuring Interhemispheric Transfer Time
by Eran Zaidel and Marco Iacoboni |
| I | | Anatomy and Morphometry of the Corpus Callosum |
| 1 | | Callosal Axons and Their Development
by Giorgio M. Innocenti and Raymond Bressoud |
| 2 | | Corpus Callosum Morphology in Relation to Cerebral Asymmetries in the Postmortem Human
by Francisco Aboitiz, Andrés Idem and Ricardo Olivares |
| 3 | | Brain Size: A Possible Source of Interindividual Variability in Corpus Callosum Morphology
by Lutz Jäncke and Helmuth Steinmetz |
| 4 | | Morphometrics for Callosal Shape Studies
by Fred L. Bookstein |
| 5 | | Mapping Structural Alterations of the Corpus Callosum During Brain Development and Degeneration
by Fred L. Bookstein |
| II | | Physiological Aspects of Callosal Sensorimotor Integration |
| 6 | | Functions of the Corpus Callosum as Derived from Split-Chiasm Studies in Cats
by Maurice Ptito |
| 7 | | Functions of the Corpus Callosum as Derived from Split-Chiasm Studies in Cats
by Maurice Ptito |
| 8 | | Interhemispheric Visuomotor Activiation: Spatiotemporal Electrophysiology Related to Reaction Time
by Maurice Ptito |
| III | | Interhemispheric Sensorimotor Integration: Behavioral Studies |
| 9 | | The Evolution of the Concept of Interhemispheric Relay Time
by Claude M. J. Braun, André Achim, and Caroline Larocque |
| 10 | | The Corpus Callosum Equilibrates Hemispheric Activation
by Marcel Kinsbourne |
| 11 | | Effects of Partial Callosal and Unilateral Cortical Lesions on Interhemispheric Transfer
by Carlo A. Marzi, L. G. Bongiovanni, Carlo Miniussi, and Nicola Smania |
| 12 | | Stable and Variable Aspects of Callosal Channels: Lessons from Partial Disconnection
by Marco Iacoboni and Eran Zaidel |
| 13 | | Sensorimotor Integration in the Split Brain
by Eran Zaidel and Marco Iacoboni |
| 14 | | Parallel Processin the the Bisected Brain: Implications for Callosal Function
by Patricia A. Reuter-Lorenz |
| 15 | | Agenesis of the Corpus Callosum
by Maryse C. Lassonde, Hannelore C. Sauerwein, and Franco Lepore |
| IV | | The Corpus Callosum and Clinical Investigations |
| 16 | | Clinical Neuropsychological Assessment of Callosal Dysfunction: Multiple Sclerosis and Dyslexia
by Maryse C. Lassonde, Hannelore C. Sauerwein, and Franco Lepore |
| 17 | | Alexithymia as a Consequence of Impaired Callosal Function: Evidence from Multiple Sclerosis Patients and Normal Individuals
by Géraldine Daquin, Jean Pelletier, Michele Montreuil, and Fabrice Robichon |
| 18 | | Functional Consequences of Changes in Callosal Area in Tourette's Syndrome and Attention Deficit/Hyperactivity Disorder
by Maryse C. Lassonde, Hannelore C. Sauerwein, and Franco Lepore |
| 19 | | Using the Corpus Callosum as an Effective Anatomical Probe in the Study of Schizophrenia
by Patricia E. Cowell, Victor Denenberg, Gary Boehm, Andrew Kertesz, and Henry Nasrallah |
| 20 | | Interhemispheric Abnormalities in Schizophrenia and Their Possible Etiology
by Robert W. Doty |
| V | | From Anatomy to Behavior: The Case of Pure Alexia |
| 21 | | The Role of Homotopic and Heterotopic Callosal Connections in Humans
by Stephanie Clarke |
| 22 | | Optic Aphasia and Pure Alexia: Contribution of Callosal Disconnection Syndromes to the Study of Lexical and Semantic Representation in the Right Hemisphere
by Claudio G. Luzzatti |
| | About the Authors |
| | Contributors |
| | Author Index |
| | Subject Index |
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