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Attention modulates somatosensory cerebral blood flow response to vibrotactile stimulation as measured by positron emission tomography
Author(s) -
Meyer E.,
Ferguson S. S. G.,
Zatorre R. J.,
Alivisatos B.,
Marrett S.,
Evans A. C.,
Hakim A. M.
Publication year - 1991
Publication title -
annals of neurology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 4.764
H-Index - 296
eISSN - 1531-8249
pISSN - 0364-5134
DOI - 10.1002/ana.410290418
Subject(s) - positron emission tomography , cerebral blood flow , somatosensory system , neuroscience , medicine , stimulation , sensory stimulation therapy , psychology , anesthesia
In human primary somatosensory cortex, the cerebral blood flow response to vibrotactile stimulation of the fingers (110 Hz), as measured by positron emission tomography and H 2 15 O, was 13% higher ( p < 0.025) when the subjects attended to the stimulus, compared to when they were simultaneously engaged in a distraction task. This suggests that the physiological response of a primary cortical area can be modulated by the attentive behavior of the subject.