Cerebral hemodynamics during discrimination of prosodic and semantic emotion in speech studied by transcranial Doppler ultrasonography. |
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Authors: | Vingerhoets, Guy Berckmoes, Celine Stroobant, Nathalie |
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Abstract: | Simultaneous measurement of blood flow velocity (BFV) in the middle cerebral arteries was achieved by transcranial Doppler ultrasonography in 36 right-handed volunteers who were instructed to identify the emotion conveyed by prosody or semantics of a number of sentences. The tasks were performed under 2 levels of interference: neutral versus discordant affective value of the modality that had to be ignored. A multivariate analysis of variance showed a significant bilateral increase in BFV during the discordant conditions reflecting increased attentional demand. A significant left-hemispheric lateralization of BFV was observed as emotional semantics were labeled. When attention was shifted to affective prosody, the lateralization effect disappeared as a result of a marked increase in right-hemispheric BFV. (PsycINFO Database Record (c) 2010 APA, all rights reserved) |
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Keywords: | middle cerebral arteries cerebral hemodynamics transcranial doppler blood flow velocity emotional semantics lateral dominance |
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