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Multiple Representation in Primate SI: A View from a Window on the Brain

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Handbook of Neurochemistry and Molecular Neurobiology

Abstract:

This chapter summarizes recent findings regarding the functional organization of primary somatosensory cortex (SI) in primates when viewed through ‘windows’ on the brain with optical imaging methodologies. These views have confirmed previous knowledge regarding topographic organization in SI. They have also revealed the presence of functional domains for the processing of different sensory tactile modalities (pressure, flutter, and vibration domains). Surprisingly, the representation of these tactile modalities is quite distinct in organization from that of visual modalities (form, color, and depth) in visual cortex. Rather, tactile modality maps appear similar to visual orientation maps in primate visual cortex. Implications of these findings for the relationship of cortical organization to the sensory scene are discussed.

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Abbreviations

SI:

primary somatosensory cortex

SII:

second somatosensory area

PV:

parietal ventral area

SA:

slowly adapting

RA:

rapidly adapting

PC:

pacinian

VPL:

ventral posterior lateral

VPI:

ventroposterior inferior

CCD:

charge coupled device

V1:

primary visual cortex

V2:

second visual area

V4:

fourth visual area

IT:

inferotemporal cortex

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Authors
  1. A. W. Roe
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  2. R. M. Friedman
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  3. L. M. Chen
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Editors and Affiliations

  1. Center for Neurochemistry, Nathan S. Kline Institute for Psychiatric Research, 140 Old Orangeburg Road, New York, 10962, Orangeburg, USA

    Abel Lajtha (Director) (Director)

  2. University of Tennessee Health Science Center, 62 South Dunlap, 38163, Memphis, Tennessee, USA

    Dianna A. Johnson (Hiatt Professor of Ophthalmology Associate Vice Chancellor for Academic, Faculty and Student Affairs) (Hiatt Professor of Ophthalmology Associate Vice Chancellor for Academic, Faculty and Student Affairs)

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Roe, A.W., Friedman, R.M., Chen, L.M. (2007). Multiple Representation in Primate SI: A View from a Window on the Brain. In: Lajtha, A., Johnson, D.A. (eds) Handbook of Neurochemistry and Molecular Neurobiology. Springer, New York, NY. https://doi.org/10.1007/978-0-387-30374-1_1

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