Brain activity during divided and selective attention to auditory and visual sentence comprehension tasks

dc.contributorAalto Universityen
dc.contributor.authorMoisala, Mona
dc.contributor.authorSalmela, Viljami
dc.contributor.authorSalo, Emma
dc.contributor.authorCarlson, Synnove
dc.contributor.authorVuontela, Virve
dc.contributor.authorSalonen, Oili
dc.contributor.authorAlho, Kimmo
dc.contributor.departmentDepartment of Neuroscience and Biomedical Engineeringen
dc.description.abstractUsing functional magnetic resonance imaging (fMRI), we measured brain activity of human participants while they performed a sentence congruence judgment task in either the visual or auditory modality separately, or in both modalities simultaneously. Significant performance decrements were observed when attention was divided between the two modalities compared with when one modality was selectively attended. Compared with selective attention (i.e., single tasking), divided attention (i.e., dual-tasking) did not recruit additional cortical regions, but resulted in increased activity in medial and lateral frontal regions which were also activated by the component tasks when performed separately. Areas involved in semantic language processing were revealed predominantly in the left lateral prefrontal cortex by contrasting incongruent with congruent sentences. These areas also showed significant activity increases during divided attention in relation to selective attention. In the sensory cortices, no crossmodal inhibition was observed during divided attention when compared with selective attention to one modality. Our results suggest that the observed performance decrements during dual-tasking are due to interference of the two tasks because they utilize the same part of the cortex. Moreover, semantic dual-tasking did not appear to recruit additional brain areas in comparison with single tasking, and no crossmodal inhibition was observed during intermodal divided attention.en
dc.description.versionPeer revieweden
dc.identifier.citationMoisala , M , Salmela , V , Salo , E , Carlson , S , Vuontela , V , Salonen , O & Alho , K 2015 , ' Brain activity during divided and selective attention to auditory and visual sentence comprehension tasks ' , FRONTIERS IN HUMAN NEUROSCIENCE , vol. 9 , 86 , pp. 1-15 .
dc.identifier.otherPURE UUID: 168cee3d-daf7-4303-8e6d-3adfcfc9fa1c
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dc.relation.ispartofseriesFRONTIERS IN HUMAN NEUROSCIENCEen
dc.relation.ispartofseriesVolume 9en
dc.subject.keyworddivided attention
dc.subject.keywordselective attention
dc.subject.keywordfunctional MRI
dc.subject.keywordsemantic processing
dc.titleBrain activity during divided and selective attention to auditory and visual sentence comprehension tasksen
dc.typeA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessäfi