A1 Journal article – refereed
Cortical Circuit for Binding Object Identity and Location During Multiple-Object Tracking




List of Authors: Lauri Nummenmaa, Lauri Oksama, Erico Glerean, Jukka Hyönä
Publisher: OXFORD UNIV PRESS INC
Place: Oxford
Publication year: 2017
Journal: Cerebral Cortex
Journal name in source: CEREBRAL CORTEX
Journal acronym: CEREB CORTEX
Volume number: 27
Issue number: 1
Number of pages: 11
ISSN: 1047-3211
eISSN: 1460-2199

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.

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Last updated on 2019-20-07 at 07:29