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

Frontiers in Human Neuroscience
Mona MoisalaKimmo Alho

Abstract

Using 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 tas...Continue Reading

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Citations

Oct 27, 2015·Frontiers in Human Neuroscience·Patti AdankDaniel Kennedy-Higgins
Jun 12, 2019·Neuropsychology, Development, and Cognition. Section B, Aging, Neuropsychology and Cognition·Giovanna MioniFranca Stablum
Jan 23, 2018·Scandinavian Journal of Psychology·Lars Nyberg
Feb 27, 2018·Frontiers in Behavioral Neuroscience·Yu-Kai WangChin-Teng Lin
May 22, 2020·NeuroImage·Marie C McCuskerTony W Wilson

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Methods Mentioned

BETA
SMA

Software Mentioned

Matlab
Freesurfer
SPM8
Audacity
Statistical Parametric Mapping ( SPM8 )
xjView
SPSS Statistics
SPSS

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