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The Organization of Somatosensory Callosal Projections

A New Interpretation
  • Herbert P. Killackey

Abstract

Our understanding of the function of the corpus callosum at the psychobiological level has increased enormously over the past 30 years. The now classic study of Myers and Sperry (1953) demonstrated the role of the corpus callosum in the interhemispheric transfer of information. This finding was extended to a much more general and exciting level with the demonstration of a breakdown in the interhemispheric transfer of information related not only to the sensory and motor spheres, but also to more global cognitive functions in man (Gazzaniga et al., 1962, 1965, 1967; Gazzaniga, 1970). However, our understanding of the corpus callosum at the neurophysiological and neuroanatomical levels has not kept pace with these exciting developments. In this chapter I focus on the callosal projections of the somatosensory system of rodents and primates, emphasizing research in which I have been involved. I will attempt to provide a somewhat novel interpretation of the anatomical organization of the corpus callosum based on this research, but I will begin by presenting what I consider to be the consensual view of the relationship between the corpus callosum connections and the somatosensory cortex

Keywords

Corpus Callosum Somatosensory Cortex Primary Somatosensory Cortex Interhemispheric Transfer Callosal Connection 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Plenum Press, New York 1985

Authors and Affiliations

  • Herbert P. Killackey
    • 1
  1. 1.Department of PsychobiologyUniversity of CaliforniaIrvineUSA

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