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Organization of the S I Cortex

Multiple Cutaneous Representations in Areas 3b and 1 of the Owl Monkey

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Book cover Cortical Sensory Organization

Part of the book series: Cortical Sensory Organization ((CSO,volume 1))

Abstract

Recent electrophysiological mapping studies have led to a significant redefinition of the internal organization of “S I” of primates (11, 17). Classically, “SI” has been described as a single and at least largely continuous representation of the body surface spanning four distinct architectonic regions, areas 3a, 3b, 1 and 2, in a number of New World and Old World species of primates (1, 2, 4, 5, 8, 14, 27–31, 36-42). However, these new studies (extending earlier, more limited mapping studies of Paul et al., 23–25) have revealed that there are two complete (or nearly complete) representations of the body surface and two representations of deep body structures within the classical primate “S I” (11,17). The two large cutaneous representations are coincident with cytoarchitectonic areas 3b and 1. These two cutaneous representations have striking differences in internal topography, and in proportional representation of different skin surfaces.

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Author information

Authors and Affiliations

  1. The Coleman Laboratory, University of California at San Francisco, San Francisco, California, USA

    Michael M. Merzenich

  2. Department of Psychology, Vanderbilt University, Nashville, Tennessee, USA

    Mriganka Sur & Jon H. Kaas

  3. Department of Anatomy, Vanderbilt University, Nashville, Tennessee, USA

    Randall J. Nelson & Jon H. Kaas

Authors
  1. Michael M. Merzenich
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  2. Mriganka Sur
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  3. Randall J. Nelson
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  4. Jon H. Kaas
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Editor information

Editors and Affiliations

  1. University of Wisconsin, Madison, Wisconsin, USA

    Clinton N. Woolsey

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© 1981 The HUMANA Press Inc.

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Merzenich, M.M., Sur, M., Nelson, R.J., Kaas, J.H. (1981). Organization of the S I Cortex. In: Woolsey, C.N. (eds) Cortical Sensory Organization. Cortical Sensory Organization, vol 1. Humana Press. https://doi.org/10.1007/978-1-4612-5811-7_3

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  • DOI: https://doi.org/10.1007/978-1-4612-5811-7_3

  • Publisher Name: Humana Press

  • Print ISBN: 978-1-4612-5813-1

  • Online ISBN: 978-1-4612-5811-7

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