Human task-specific somatosensory activation

M. D. Ginsberg, F. Yoshii, S. Vibulsresth, J. Y. Chang, R. Duara, W. W. Barker, T. E. Boothe

Research output: Contribution to journalArticlepeer-review

31 Scopus citations


We used positron emission tomography to study normal patterns of local cortical metabolic activation induced by somatosensory stimuli. Palpation and sorting of mah-jongg tiles by textured design increased local glucose metabolic rate (lCMRgl), by 18% on average, in contralateral somatosensory cortex. A graphesthesia task gave a similar result. In contrast, vigorous vibrotactile stimulation of fingers, face, or knee did not produce a consistent focus of activation. Our results indicate that lCMRgl activation is best achieved by somatosensory tasks requiring an active perceptual effort.

Original languageEnglish (US)
Pages (from-to)1301-1308
Number of pages8
Issue number8
StatePublished - Aug 1987

ASJC Scopus subject areas

  • Clinical Neurology


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