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Proc Natl Acad Sci U S A. 2005 Aug 30;102(35):12601-5. Epub 2005 Aug 22.

Tactile form and location processing in the human brain.

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1
Laboratory of Brain and Cognition, National Institute of Mental Health, National Institutes of Health, Department of Health and Human Services, Bethesda, MD 20892, USA.

Abstract

To elucidate the neural basis of the recognition of tactile form and location, we used functional MRI while subjects discriminated gratings delivered to the fingertip of either the right or left hand. Subjects were required to selectively attend to either grating orientation or grating location under identical stimulus conditions. Independent of the hand that was stimulated, grating orientation discrimination selectively activated the left intraparietal sulcus, whereas grating location discrimination selectively activated the right temporoparietal junction. Hence, hemispheric dominance appears to be an organizing principle for cortical processing of tactile form and location.

PMID:
16116098
PMCID:
PMC1188260
DOI:
10.1073/pnas.0505907102
[Indexed for MEDLINE]
Free PMC Article
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