Tracking multiple independent targets: evidence for a parallel tracking mechanism. Export

@article{citeulike:2857453, abstract = {There is considerable evidence that visual attention is concentrated at a single locus in the visual field, and that this locus can be moved independent of eye movements. Two studies are reported which suggest that, while certain aspects of attention require that locations be scanned serially, at least one operation may be carried out in parallel across several independent loci in the visual field. That is the operation of indexing features and tracking their identity. The studies show that: (a) subjects are able to track a subset of up to 5 objects in a field of 10 identical randomly-moving objects in order to distinguish a change in a target from a change in a distractor; and (b) when the speed and distance parameters of the display are designed so that, on the basis of some very conservative assumptions about the speed of attention movement and encoding times, the predicted performance of a serial scanning and updating algorithm would not exceed about 40\% accuracy, subjects still manage to do the task with 87\% accuracy. These findings are discussed in relation to an earlier, and independently motivated model of feature-binding--called the FINST model--which posits a primitive identity maintenance mechanism that indexes and tracks a limited number of visual objects in parallel. These indexes are hypothesized to serve the function of binding visual features prior to subsequent pattern recognition.}, address = {Center for Cognitive Science, University of Western Ontario, London, Canada.}, author = {Pylyshyn, Z. W. and Storm, R. W.}, citeulike-article-id = {2857453}, citeulike-linkout-0 = {http://view.ncbi.nlm.nih.gov/pubmed/3153671}, citeulike-linkout-1 = {http://www.hubmed.org/display.cgi?uids=3153671}, issn = {0169-1015}, journal = {Spatial vision}, keywords = {cognition, finst, multiple\_object\_tracking, visual\_attention, visual\_cognition, visual\_index\_theory}, number = {3}, pages = {179--197}, posted-at = {2008-12-23 05:10:39}, priority = {2}, title = {Tracking multiple independent targets: evidence for a parallel tracking mechanism.}, url = {http://view.ncbi.nlm.nih.gov/pubmed/3153671}, volume = {3}, year = {1988} }

TY - JOUR ID - citeulike:2857453 L3 - citeulike-article-id:2857453 N2 - There is considerable evidence that visual attention is concentrated at a single locus in the visual field, and that this locus can be moved independent of eye movements. Two studies are reported which suggest that, while certain aspects of attention require that locations be scanned serially, at least one operation may be carried out in parallel across several independent loci in the visual field. That is the operation of indexing features and tracking their identity. The studies show that: (a) subjects are able to track a subset of up to 5 objects in a field of 10 identical randomly-moving objects in order to distinguish a change in a target from a change in a distractor; and (b) when the speed and distance parameters of the display are designed so that, on the basis of some very conservative assumptions about the speed of attention movement and encoding times, the predicted performance of a serial scanning and updating algorithm would not exceed about 40% accuracy, subjects still manage to do the task with 87% accuracy. These findings are discussed in relation to an earlier, and independently motivated model of feature-binding--called the FINST model--which posits a primitive identity maintenance mechanism that indexes and tracks a limited number of visual objects in parallel. These indexes are hypothesized to serve the function of binding visual features prior to subsequent pattern recognition. IS - 3 JF - Spatial vision SN - 0169-1015 AD - Center for Cognitive Science, University of Western Ontario, London, Canada. EP - 197 TI - Tracking multiple independent targets: evidence for a parallel tracking mechanism. VL - 3 SP - 179 KW - cognition KW - finst KW - multiple_object_tracking KW - visual_attention KW - visual_cognition KW - visual_index_theory AU - Pylyshyn, ZW AU - Storm, RW PY - 1988/// UR - http://view.ncbi.nlm.nih.gov/pubmed/3153671 ER -