Document Detail


Behavioral dynamics and neural grounding of a dynamic field theory of multi-object tracking.
MedLine Citation:
PMID:  22992027     Owner:  NLM     Status:  Publisher    
Abstract/OtherAbstract:
The ability to dynamically track moving objects in the environment is crucial for efficient interaction with the local surrounds. Here, we examined this ability in the context of the multi-object tracking (MOT) task. Several theories have been proposed to explain how people track moving objects; however, only one of these previous theories is implemented in a real-time process model, and there has been no direct contact between theories of object tracking and the growing neural literature using ERPs and fMRI. Here, we present a neural process model of object tracking that builds from a Dynamic Field Theory of spatial cognition. Simulations reveal that our dynamic field model captures recent behavioral data examining the impact of speed and tracking duration on MOT performance. Moreover, we show that the same model with the same trajectories and parameters can shed light on recent ERP results probing how people distribute attentional resources to targets vs. distractors. We conclude by comparing this new theory of object tracking to other recent accounts, and discuss how the neural grounding of the theory might be effectively explored in future work.
Authors:
J P Spencer; K Barich; J Goldberg; S Perone
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-9-19
Journal Detail:
Title:  Journal of integrative neuroscience     Volume:  -     ISSN:  0219-6352     ISO Abbreviation:  J. Integr. Neurosci.     Publication Date:  2012 Sep 
Date Detail:
Created Date:  2012-9-20     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101156357     Medline TA:  J Integr Neurosci     Country:  -    
Other Details:
Languages:  ENG     Pagination:  1250022     Citation Subset:  -    
Affiliation:
Department of Psychology, E11 Seashore Hall, University of Iowa, Iowa City, IA 52242, USA.
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