The Two Halves of the Brain

Information Processing in the Cerebral Hemispheres

Hemispheric asymmetry is one of the basic aspects of perception and cognitive processing. The different functions of the left and right hemispheres of the brain have been studied with renewed interest in recent years, as scholars explore applications to new areas, new measuring techniques, and new theoretical approaches. This volume provides a comprehensive view of the latest research in brain asymmetry, offering not only recent empirical and clinical findings but also a coherent theoretical approach to the subject. In chapters that report on the field at levels from the molecular to the clinical, leading researchers address such topics as the evolution and genetics of brain asymmetry; animal models; findings from structural and functional neuroimaging techniques and research; sex differences and hormonal effects; sleep asymmetry; cognitive asymmetry in visual and auditory perception; and auditory laterality and speech perception, memory, and asymmetry in the context of developmental, neurological, and psychiatric disorders.

Contributors: Katrin Amunts, Ulrike Bayer, Alfredo Brancucci, Vince D. Calhoun, Maria Casagrande, Marco Catani, Michael C. Corballis, Patricia E. Cowell, Timothy J. Crow, Tom Eichele, Stephanie Forkel, Patrick J. Gannon, Isabelle George, Onur Güntürkün, Heikki Hämäläinen, Markus Hausmann, Joseph B. Hellige, Kenneth Hugdahl, Masud Husain, Grégoria Kalpouzos, Bruno Laeng, Martina Manns, Chikashi Michimata, Deborah W. Moncrieff, Lars Nyberg, Godfrey Pearlson, Stefan Pollmann, Victoria Singh-Curry, Iris E.C. Sommer, Tao Sun, Nathan Swanson, Fiia Takio, Michel Thiebaut de Schotten, René Westerhausen

Table of Contents

  1. Preface
  2. Introduction and Overview

    Kenneth Hugdahl and Rene Westerhausen

  3. I. Genetic and Evolutionary Perspectives on Hemispheric Asymmetry
  4. 1. Differential Gene Transcription in the Left and Right Cerebral Cortex

    Tao Sun

  5. 2. Evolutionary Depth of Human Brain Language Areas

    Patrick J. Gannon

  6. 3. Handedness and Cerebral Asymmetry : An Evolutionary Perspective

    Michael C. Corballis

  7. II. Hemispheric Asymmetry in Nonmammalian Species
  8. 4. Hemispheric Asymmetry of Songbirds

    Isabelle George

  9. 5. The Embryonic Development of Visual Asymmetry in the Pigeon

    Onur Gunturkun and Martina Manns

  10. III. Neuroimaging and Hemispheric Asymmetry
  11. 6. Structural Indices of Asymmetry

    Katrin Amunts

  12. 7. Asymmetry of White Matter Pathways

    Marco Catani, Stephanie Forkel, and Michel Thiebaut de Schotten

  13. 8. Electroencephalographic and Magnetoencephalographic Indices of Hemispheric Asymmetry

    Alfredo Brancucci

  14. IV. Hormones, Sex Differences, and Sleep Asymmetry
  15. 9. Sex Hormonal Effects on Hemispheric Asymmetry and Interhemispheric Interaction

    Markus Hausmann and Ulrike Bayer

  16. 10. Sex Differences in Handedness, Brain Asymmetry, and Language Lateralization

    Iris E. C. Sommer

  17. 11. Laterality and Sleep

    Maria Casagrande

  18. V. Asymmetry of Perception
  19. 12. Auditory Laterality : Recent Findings in Speech Perception

    Patricia E. Cowell

  20. 13. Processing Asymmetries in the Visual System

    Joseph B. Hellige, Bruno Laeng, and Chikashi Michimata

  21. 14. Integrating Auditory and Visual Asymmetry

    Heikki Hamalainen and Fiia Takio

  22. VI. Asymmetry of Cognition
  23. 15. A Unifi ed Structural-Attentional Framework for Dichotic Listening

    Stefan Pollmann

  24. 16. Cognitive Control of Auditory Laterality

    Rene Westerhausen and Kenneth Hugdahl

  25. 17. Hemispheric Asymmetry of Memory

    Gregoria Kalpouzos and Lars Nyberg

  26. VII. Asymmetry in Neurological and Pediatric Disorders
  27. 18. Visuospatial Function and the Neglect Syndrome

    Victoria Singh-Curry and Masud Husain

  28. 19. Hemispheric Asymmetry in Pediatric Developmental Disorders : Autism, Attention-Deficit/Hyperactivity Disorder, and Dyslexia

    Deborah W. Moncrieff

  29. VIII. Asymmetry in Schizophrenia and Psychosis
  30. 20. Lateral Differences in the Default Mode Network in Schizophrenia

    Nathan Swanson, Tom Eichele, Godfrey Pearlson, and Vince D. Calhoun

  31. 21. The Origins of Psychosis and the Evolution of Language : Cerebral Asymmetry, Sex Chromosomes, and Speciation

    Timothy J. Crow

  32. Contributors
  33. Index
  34. Insert