Cognition 80 (1-2):159-177 (2001)
The notion that visual attention can operate over visual objects in addition to spatial locations has recently received much empirical support, but there has been relatively little empirical consideration of what can count as an `object' in the ®rst place. We have investi- gated this question in the context of the multiple object tracking paradigm, in which subjects must track a number of independently and unpredictably moving identical items in a ®eld of identical distractors. What types of feature clusters can be tracked in this manner? In other words, what counts as an `object' in this task? We investigated this question with a technique we call target merging: we alter tracking displays so that distinct target and distractor loca- tions appear perceptually to be parts of the same object by merging pairs of items (one target with one distractor) in various ways ± for example, by connecting item locations with a simple line segment, by drawing the convex hull of the two items, and so forth. The data show that target merging makes the tracking task far more dif®cult to varying degrees depending on exactly how the items are merged. The effect is perceptually salient, involving in some conditions a total destruction of subjects' capacity to track multiple items. These studies provide strong evidence for the object-based nature of tracking, con®rming that in some contexts attention must be allocated to objects rather than arbitrary collections of features. In addition, the results begin to reveal the types of spatially organized scene components that can be independently attended as a function of properties such as connectedness, part struc- ture, and other types of perceptual grouping. q 2001 Elsevier Science B.V. All rights reserved
|Keywords||No keywords specified (fix it)|
|Categories||categorize this paper)|
References found in this work BETA
No references found.
Citations of this work BETA
Infants' Knowledge of Objects: Beyond Object Files and Object Tracking.Susan Carey & Fei Xu - 2001 - Cognition 80 (1-2):179-213.
What You See is What You Set: Sustained Inattentional Blindness and the Capture of Awareness.Steve Most, Brian J. Scholl, E. Clifford & Daniel J. Simons - 2005 - Psychological Review 112 (1):217-242.
Segmentation, Attention and Phenomenal Visual Objects.Jon Driver, Greg Davis, Charlotte Russell, Massimo Turatto & Elliot Freeman - 2001 - Cognition 80 (1-2):61-95.
Swapping or Dropping? Electrophysiological Measures of Difficulty During Multiple Object Tracking.Trafton Drew, Todd S. Horowitz & Edward K. Vogel - 2013 - Cognition 126 (2):213-223.
Similar books and articles
Some Puzzling Findings in Multiple Object Tracking: I. Tracking Without Keeping Track of Object Identities.Zenon Pylyshyn - manuscript
Further Evidence for Inhibition of Moving Nontargets in Multiple Object Tracking.Zenon Pylyshyn - manuscript
Some Puzzling Findings in Multiple Object Tracking (MOT): II. Inhibition of Moving Nontargets.Zenon Pylyshyn - manuscript
Selective Nontarget Inhibition in Multiple Object Tracking (MOT).Zenon W. Pylyshyn, Charles E. King & James E. Reilly - unknown
How to Define an Object: Evidence From the Effects of Action on Perception and Attention.Glyn W. Humphreys & M. Jane Riddoch - 2007 - Mind and Language 22 (5):534–547.
Tracking Multiple Items Through Occlusion: Clues to Visual Objecthood.Brian J. Scholl & Zenon W. Pylyshyn - unknown
Visual Indexes, Preconceptual Objects, and Situated Vision.Zenon W. Pylyshyn - 2001 - Cognition 80 (1-2):127-158.
Toward a Biased Competition Account of Object-Based Segregation and Attention.Shaun P. Vecera - 2000 - Brain and Mind 1 (3):353-384.
A Study in the Cognition of Individuals' Identity: Solving the Problem of Singular Cognition in Object and Agent Tracking.Nicolas Bullot - 2007 - Consciousness and Cognition 16 (2):276-293.
Added to index2009-01-28
Total downloads122 ( #37,524 of 2,146,457 )
Recent downloads (6 months)4 ( #185,113 of 2,146,457 )
How can I increase my downloads?
There are no threads in this forum
Nothing in this forum yet.