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Propagation of information along the cortical hierarchy as a function of attention while reading and listening to stories

Mor Regev, Erez Simony, Katherine Lee, Kean Ming Tan, Janice Chen, Uri Hasson
doi: https://doi.org/10.1101/291526
Mor Regev
McGill University & Princeton University;
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  • For correspondence: moregev@gmail.com
Erez Simony
Holon Institute of Technology & Weizmann Institute of Science;
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Katherine Lee
Princeton University;
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Kean Ming Tan
University of Minnesota;
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Janice Chen
Johns Hopkins University
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Uri Hasson
Princeton University;
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Abstract

How does attention route information from sensory to high-order areas as a function of task, within the relatively fixed topology of the brain? In this study, participants were simultaneously presented with two unrelated stories - one spoken and one written - and asked to attend one while ignoring the other. We used fMRI and a novel inter-subject correlation analysis to track the spread of information along the processing hierarchy as a function of task. Processing the unattended spoken (written) information was confined to auditory (visual) cortices. In contrast, attending to the spoken (written) story enhanced the stimulus-selective responses in early sensory regions and allowed it to spread into higher-order areas. Surprisingly, we found that the story-specific spoken (written) responses for the attended story also reached the opposite secondary visual (auditory) regions. These results demonstrate how attention enhances the processing of attended input and allows it to propagate across brain areas.

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The copyright holder for this preprint is the author/funder. It is made available under a CC-BY-NC-ND 4.0 International license.
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  • Posted April 8, 2018.

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Propagation of information along the cortical hierarchy as a function of attention while reading and listening to stories
Mor Regev, Erez Simony, Katherine Lee, Kean Ming Tan, Janice Chen, Uri Hasson
bioRxiv 291526; doi: https://doi.org/10.1101/291526
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Propagation of information along the cortical hierarchy as a function of attention while reading and listening to stories
Mor Regev, Erez Simony, Katherine Lee, Kean Ming Tan, Janice Chen, Uri Hasson
bioRxiv 291526; doi: https://doi.org/10.1101/291526

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