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

摘要: Sustained multifocal attention for moving targets requires binding object identities with their locations. The brain mechanisms of identity-location during attentive tracking have remained unresolved. In 2 functional magnetic resonance imaging experiments, we measured participants' hemodynamic activity multiple objects 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 in and temporal systems subserving recognition working memory. These effects were replicated when eye movements prohibited. associated connectivity between lateral frontal parietal regions. We propose that coordinated this network subserves tracking.