A1 Refereed original research article in a scientific journal
Dynamic binding of identity and location information: A serial model of multiple identity tracking
Authors: Oksama L, Hyona J
Publisher: ACADEMIC PRESS INC ELSEVIER SCIENCE
Publication year: 2008
Journal: Cognitive Psychology
Journal name in source: COGNITIVE PSYCHOLOGY
Journal acronym: COGNITIVE PSYCHOL
Volume: 56
Issue: 4
First page : 237
Last page: 283
Number of pages: 47
ISSN: 0010-0285
DOI: https://doi.org/10.1016/j.cogpsych.2007.03.001
Abstract
Tracking of multiple moving objects is commonly assumed to be carried out by a fixed-capacity parallel mechanism. The present study proposes a serial model (MOMIT) to explain performance accuracy in the maintenance of multiple moving objects with distinct identities. A serial refresh mechanism is postulated, which makes recourse to continuous attention switching, a capacity-limited episodic buffer for identity-location bindings, indexed location information stored in the visuospatial short-term memory, and an active role of long-term memory. As identity-location bindings are refreshed serially, a location error is inherent for all other targets except the focally attended one. The magnitude of this location error is a key factor in predicting tracking accuracy. MOMIT's predictions were supported by the data of five experiments: performance accuracy decreased as a function of target set-size, speed, and familiarity. A mathematical version of MOMIT fitted nicely to the observed data with plausible parameter estimates for the binding capacity and refresh time. (C) 2007 Elsevier Inc. All rights reserved.
Tracking of multiple moving objects is commonly assumed to be carried out by a fixed-capacity parallel mechanism. The present study proposes a serial model (MOMIT) to explain performance accuracy in the maintenance of multiple moving objects with distinct identities. A serial refresh mechanism is postulated, which makes recourse to continuous attention switching, a capacity-limited episodic buffer for identity-location bindings, indexed location information stored in the visuospatial short-term memory, and an active role of long-term memory. As identity-location bindings are refreshed serially, a location error is inherent for all other targets except the focally attended one. The magnitude of this location error is a key factor in predicting tracking accuracy. MOMIT's predictions were supported by the data of five experiments: performance accuracy decreased as a function of target set-size, speed, and familiarity. A mathematical version of MOMIT fitted nicely to the observed data with plausible parameter estimates for the binding capacity and refresh time. (C) 2007 Elsevier Inc. All rights reserved.
Keywords:
change detection, dynamic visual scenes, episodic buffer, identity-location binding, long-term memory, multiple identity tracking, multiple object tracking, visuospatial short-term memory
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