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  • Title: Handedness and functional MRI-activation patterns in sentence processing.
    Author: Jörgens S, Kleiser R, Indefrey P, Seitz RJ.
    Journal: Neuroreport; 2007 Aug 27; 18(13):1339-43. PubMed ID: 17762709.
    Abstract:
    We investigate differences of cerebral activation in 12 right-handed and left-handed participants, respectively, using a sentence-processing task. Functional MRI shows activation of left-frontal and inferior-parietal speech areas (BA 44, BA9, BA 40) in both groups, but a stronger bilateral activation in left-handers. Direct group comparison reveals a stronger activation in right-frontal cortex (BA 47, BA 6) and left cerebellum in left-handers. Laterality indices for the inferior-frontal cortex are less asymmetric in left-handers and are not related to the degree of handedness. Thus, our results show that sentence-processing induced enhanced activation involving a bilateral network in left-handed participants.
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