The Parallel Brain: The Cognitive Neuroscience of the Corpus Callosum

The Parallel Brain: The Cognitive Neuroscience of the Corpus Callosum

by Eran Zaidel

An overview of the central role in cognitive neuroscience of the corpus callosum, the bands of tissue connecting the brain's two hemispheres.See more details below


An overview of the central role in cognitive neuroscience of the corpus callosum, the bands of tissue connecting the brain's two hemispheres.

Product Details

MIT Press
Publication date:
Issues in Clinical and Cognitive Neuropsychology
Product dimensions:
8.40(w) x 11.00(h) x 1.40(d)
Age Range:
18 Years

Meet the Author

Eran Zaidel is Professor of Behavioral Neuroscience and of Cognition in the Department of Psychology at the University of California, Los Angeles, and a member of UCLA's Brain Research Institute.

Marco Iacoboni is Associate Professor and Director of the Transcranial Magnetic Stimulation Lab at the UCLA Brain Mapping Center. He is also a member of the Brain Research Institute and of the Center for Culture, Brain, and Development at UCLA.

Table of Contents

Introduction: Poffenberger's Simple Reaction Time Paradigm for Measuring Interhemispheric Transfer Time1
IAnatomy and Morphometry of the Corpus Callosum9
1Callosal Axons and Their Development11
Commentary 1.1The Effects of Early Injury to the Cortical Plate on Callosal Connectivity27
Commentary 1.2Binocular Input Elimination and the Reshaping of Callosal Connection30
2Corpus Callosum Morphology in Relation to Cerebral Asymmetries in the Postmortem Human33
Commentary 2.1Complexity of Human Interhemispheric Connections47
3Brain Size: A Possible Source of Interindividual Variability in Corpus Callosum Morphology51
Commentary 3.1Size Differences in the Callosum: Analysis Beyond the Main Effects64
Commentary 3.2Individual Differences in Corpus Callosum Morphometry: To Normalize or Not to Normalize for Brain Size70
4Morphometrics for Callosal Shape Studies75
5Mapping Structural Alterations of the Corpus Callosum During Brain Development and Degeneration93
Editorial Commentary 1New Insights in Callosal Anatomy and Morphometry131
IIPhysiological Aspects of Callosal Sensorimotor Integration137
6Functions of the Corpus Callosum as Derived from Split-Chiasm Studies in Cats139
Commentary 6.1The Midline Fusion Hypothesis Is All Right But Cannot Explain All Callosal Functions154
7Forebrain Commissures: Glimpses of Neurons Producing Mind157
Commentary 7.1From the Physiology of Callosal Connections to the Understanding of the Mind: Still a Long Way to Go166
8Interhemispheric Visuomotor Activation: Spatiotemporal Electrophysiology Related to Reaction Time171
Commentary 8.1Interhemispheric Transfer of Visual Information as a Function of Retinal Eccentricity: Evidence from Event-Related Potentials220
Commentary 8.2Neuroimaging Patterns of Intra- and Interhemispheric Connectivity224
Commentary 8.3The Use of Event-Related Potentials for Measuring Interhemispheric Transfer Time230
Editorial Commentary 2Current Directions in Physiological Studies of Callosal Functions232
IIIInterhemispheric Sensorimotor Integration: Behavioral Studies235
9The Evolution of the Concept of Interhemispheric Relay Time237
Commentary 9.1Does the CUD in SRT Measure IHTT? Or: Is the Crossed-Uncrossed Difference in the Simple Reaction Time Task a Pure Measure of Interhemispheric Transfer Time?259
Commentary 9.2Interacting Hemispheres: A Means of Modulating Attention267
10The Corpus Callosum Equilibrates Hemispheric Activation271
Commentary 10.1A Plan for the Empirical Evaluation of the Coactivation/Equilibration Model of Callosal Function282
11Effects of Partial Callosal and Unilateral Cortical Lesions on Interhemispheric Transfer287
Commentary 11.1Interhemispheric Transfer of Visuomotor Inputs in a Split-Brain Patient: Electrophysiological and Behavioral Indexes296
12Stable and Variable Aspects of Callosal Channels: Lessons from Partial Disconnection301
Commentary 12.1Attentional Modulation of Interhemispheric Transfer: A Two-Channel Threshold Model307
13Sensorimotor Integration in the Split Brain319
Commentary 13.1Water Under the Bridge: Interhemispheric Visuomotor Integration in a Split-Brain Man337
14Parallel Processing in the Bisected Brain: Implications for Callosal Function341
Commentary 14.1In Search of Lost Time: Functional Significance of Crossed-Uncrossed Differences in Callosal Patients355
15Agenesis of the Corpus Callosum357
Commentary 15.1Sensorimotor Interaction in Agenesis of the Corpus Callosum370
Commentary 15.2Cerebral Plasticity in Callosal Agenesis Versus Callosotomy372
Commentary 15.3Interhemispheric and Intrahemispheric Mechanisms of Visuomotor Integration in Callosal Agenesis376
Editorial Commentary 3Current Directions in Behavioral Studies of Callosal Functions381
IVThe Corpus Callosum and Clinical Investigations389
16Clinical Neuropsychological Assessment of Callosal Dysfunction: Multiple Sclerosis and Dyslexia391
Commentary 16.1Interhemispheric Conduction Delay in Multiple Sclerosis407
Commentary 16.2Redundancy Gain as a Measure of Implicit Sensorimotor Integration413
17Alexithymia as a Consequence of Impaired Callosal Function: Evidence from Multiple Sclerosis Patients and Normal Individuals415
18Functional Consequences of Changes in Callosal Area in Tourette's Syndrome and Attention Deficit/Hyperactivity Disorder423
19Using the Corpus Callosum as an Effective Anatomical Probe in the Study of Schizophrenia433
20Interhemispheric Abnormalities in Schizophrenia and Their Possible Etiology445
Editorial Commentary 4Current Directions in Clinical Studies of Callosal Functions453
VFrom Anatomy to Behavior: The Case of Pure Alexia459
21The Role of Homotopic and Heterotopic Callosal Connections in Humans461
Commentary 21.1Learning to Read and Write Shapes the Anatomy and Function of the Corpus Callosum473
22Optic Aphasia and Pure Alexia: Contribution of Callosal Disconnection Syndromes to the Study of Lexical and Semantic Representation in the Right Hemisphere479
Commentary 22.1Right Hemisphere Contributions to Word Recognition in Pure Alexia497
Commentary 22.2Right Hemisphere Contributions to Residual Reading in Pure Alexia: Evidence from a Patient with Consecutive Bilateral Strokes500
Commentary 22.3Letter-by-Letter Reading: Regional Cerebral Blood Flow Correlates507
Editorial Commentary 5The Case Study of Pure Alexia: Sensorimotor Integration in the Split Brain515
About the Authors523
Author Index531
Subject Index541

Read More

Customer Reviews

Average Review:

Write a Review

and post it to your social network


Most Helpful Customer Reviews

See all customer reviews >