Cortical Circuit for Binding Object Identity and Location During Multiple-Object Tracking

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Journal Title
Journal ISSN
Volume Title
A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
Date
2016-12-01
Major/Subject
Mcode
Degree programme
Language
en
Pages
1-11
Series
Cerebral Cortex, Volume 27, issue 1
Abstract
Sustained multifocal attention for moving targets requires binding object identities with their locations. The brain mechanisms of identity-location binding during attentive tracking have remained unresolved. In 2 functional magnetic resonance imaging experiments, we measured participants’ hemodynamic activity during attentive tracking of multiple objects with equivalent (multiple-object tracking) versus distinct (multiple identity tracking, MIT) identities. Task load was manipulated parametrically. Both tasks activated large frontoparietal circuits. MIT led to significantly increased activity in frontoparietal and temporal systems subserving object recognition and working memory. These effects were replicated when eye movements were prohibited. MIT was associated with significantly increased functional connectivity between lateral temporal and frontal and parietal regions. We propose that coordinated activity of this network subserves identity-location binding during attentive tracking.
Description
10.1093/cercor/bhw380
Keywords
attention, eye movements, fMRI, objec tracking
Other note
Citation
Nummenmaa , L , Oksama , L , Glerean , E & Hyönä , J 2016 , ' Cortical Circuit for Binding Object Identity and Location During Multiple-Object Tracking ' , Cerebral Cortex , vol. 27 , no. 1 , pp. 162-172 . https://doi.org/10.1093/cercor/bhw380