Journal article
Stable Task Representations under Attentional Load Revealed with Multivariate Pattern Analysis of Human Brain Activity
Journal of cognitive neuroscience, v 27(9), pp 1789-1800
01 Sep 2015
PMID: 25941872
Abstract
Performing multiple tasks concurrently places a load on limited attentional resources and results in disrupted task performance. Although human neuroimaging studies have investigated the neural correlates of attentional load, how attentional load affects task processing is poorly understood. Here, task-related neural activity was investigated using fMRI with conventional univariate analysis and multivariate pattern analysis (MVPA) while participants performed blocks of prosaccades and antisaccades, either with or without a rapid serial visual presentation (RSVP) task. Performing prosaccades and antisaccades with RSVP increased error rates and RTs, decreased mean activation in frontoparietal brain areas associated with oculomotor control, and eliminated differences in activation between prosaccades and antisaccades. However, task identity could be decoded from spatial patterns of activation both in the absence and presence of an attentional load. Furthermore, in the FEFs and intraparietal sulcus, these spatial representations were found to be similar using cross-trial-type MVPA, which suggests stability under attentional load. These results demonstrate that attentional load may disrupt the strength of task-related neural activity, rather than the identity of task representations.
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Details
- Title
- Stable Task Representations under Attentional Load Revealed with Multivariate Pattern Analysis of Human Brain Activity
- Creators
- Jason L. Chan - Western UniversityAaron Kucyi - Harvard UniversityJoseph F. X. DeSouza - York University
- Publication Details
- Journal of cognitive neuroscience, v 27(9), pp 1789-1800
- Publisher
- Mit Press
- Number of pages
- 12
- Grant note
- Natural Sciences and Engineering Research Council of Canada (NSERC) Discovery Grant; Natural Sciences and Engineering Research Council of Canada (NSERC) York University, Faculty of Health CIHR doctoral research award; Canadian Institutes of Health Research (CIHR) NSERC USRA; Natural Sciences and Engineering Research Council of Canada (NSERC) Canadian Institutes of Health Research (CIHR) MD/PhD studentship; Canadian Institutes of Health Research (CIHR)
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Psychological and Brain Sciences (Psychology)
- Web of Science ID
- WOS:000358768200009
- Scopus ID
- 2-s2.0-84944456230
- Other Identifier
- 991021448174504721
InCites Highlights
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Neurosciences
- Psychology, Experimental