Cortical Activity to Vibrotactile Stimulation: An fMRI Study in Blind and Sighted Individuals
Identifieur interne : 001B07 ( Pmc/Corpus ); précédent : 001B06; suivant : 001B08Cortical Activity to Vibrotactile Stimulation: An fMRI Study in Blind and Sighted Individuals
Auteurs : Harold Burton ; Robert J. Sinclair ; Donald G. MclarenSource :
- Human brain mapping [ 1065-9471 ] ; 2004.
Abstract
Blind individuals show visual cortex activity during Braille reading. We examined whether such cross-modal activations reflect processing somatosensory stimuli independent of language by identifying cortical activity during a one-back vibrotactile matching task. Three groups (sighted, early-onset, and late-onset [>12 years] blind) detected whether paired vibrations (25 and 100 Hz), delivered to the right index finger, differed in frequency. Three successive paired vibrations, followed by a no-stimulation interval, were presented in a long event-related design. A fixed effects average
Url:
DOI: 10.1002/hbm.20064
PubMed: 15449356
PubMed Central: 3697024
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