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Examining the influence of task set on eye movements and fixations
Mills, Mark Hollingworth, Andrew Van der Stigchel, Stefan Hoffman, Lesa Dodd, Michael D.
Mills, Mark
Hollingworth, Andrew
Van der Stigchel, Stefan
Hoffman, Lesa
Dodd, Michael D.
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Abstract
The purpose of the present study was to examine the influence of task set on the spatial and temporal characteristics of eye movements during scene perception. In previous work, when strong control was exerted over the viewing task via specification of a target object (as in visual search), task set biased spatial, rather than temporal, parameters of eye movements. Here, we find that more participant-directed tasks (in which the task establishes general goals of viewing rather than specific objects to fixate) affect not only spatial (e.g., saccade amplitude) but also temporal parameters (e.g., fixation duration). Further, task set influenced the rate of change in fixation duration over the course of viewing but not saccade amplitude, suggesting independent mechanisms for control of these parameters.
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Date
2011-07
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Association for Research in Vision and Ophthalmology
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Keywords
Eye movements, Space and scene perception, Visual cognition, Active vision, Scene recognition, Search
Citation
Mills, Mark, Andrew Hollingworth, Stefan Van Der Stigchel, Lesa Hoffman, and Michael D. Dodd. "Examining the Influence of Task Set on Eye Movements and Fixations." Journal of Vision 17th ser. 11.8 (2011): 1-15.