Perceptual correlates of changes in cortical representation of fingers in blind multifinger braille readers

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1998
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Sterr, Annette
Müller, Matthias M.
Pantev, Christo
Taub, Edward
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Journal of Neuroscience. 1998, 18(11), pp. 4417-4423
Zusammenfassung

The mature mammalian nervous system alters its functional organization in a use-dependent manner. Enhanced stimulation of a body part enlarges its cortical representational zones and may change its topographic order. Little is known about the perceptual and behavioral relevance of these plastic alterations in cortical organization. We used blind Braille readers who use several fingers on each hand and who do so for many hours each day as a model to investigate this issue. Magnetic source imaging indicated that the cortical somatosensory representation of the fingers was frequently topographically disordered in these subjects; in addition, they frequently misperceived which of these fingers was being touched by a light tactile stimulus. In contrast, neither the disordered representation nor mislocalizations were observed in sighted controls. Blind non-teacher Braille readers who used only one finger for reading were not significantly different from the sighted controls. Thus, use-dependent cortical reorganization can be associated with functionally relevant changes in the perceptual and behavioral capacities of the individual.

Zusammenfassung in einer weiteren Sprache
Fachgebiet (DDC)
150 Psychologie
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blindness, Braille reading, cortical reorganization, somatosensory, sensory deafferentation, tactile perception, cortex, organization
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ISO 690STERR, Annette, Matthias M. MÜLLER, Thomas ELBERT, Brigitte ROCKSTROH, Christo PANTEV, Edward TAUB, 1998. Perceptual correlates of changes in cortical representation of fingers in blind multifinger braille readers. In: Journal of Neuroscience. 1998, 18(11), pp. 4417-4423
BibTex
@article{Sterr1998Perce-10860,
  year={1998},
  title={Perceptual correlates of changes in cortical representation of fingers in blind multifinger braille readers},
  number={11},
  volume={18},
  journal={Journal of Neuroscience},
  pages={4417--4423},
  author={Sterr, Annette and Müller, Matthias M. and Elbert, Thomas and Rockstroh, Brigitte and Pantev, Christo and Taub, Edward}
}
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