Visual perception in familiar, complex tasks

JB Pelz, R Canosa, J Babcock…�- …�Conference on Image�…, 2001 - ieeexplore.ieee.org
JB Pelz, R Canosa, J Babcock, J Barber
Proceedings 2001 International Conference on Image Processing (Cat�…, 2001ieeexplore.ieee.org
Visual perception is virtually effortless, operating at a level below conscious experience.
Because it most frequently operates without attentive intervention, it does not yield to
introspective report. The foveal/peripheral distribution of photoreceptor density in the human
eye requires a mechanism to rapidly re-target areas in the environment for visual inspection.
The eyes are moved both toward areas where high-acuity, central vision is required and
toward objects of interest to the current task. Monitoring those eye movements can provide a�…
Visual perception is virtually effortless, operating at a level below conscious experience. Because it most frequently operates without attentive intervention, it does not yield to introspective report. The foveal/peripheral distribution of photoreceptor density in the human eye requires a mechanism to rapidly re-target areas in the environment for visual inspection. The eyes are moved both toward areas where high-acuity, central vision is required and toward objects of interest to the current task. Monitoring those eye movements can provide a window into perception. Subjects' eye movements were monitored while they performed the familiar, complex task of hand-washing. Analysis revealed a novel perceptual strategy, in which objects of future interaction were foveated seconds before the information was "needed" for a task. These lookahead fixations are task-dependent; while they occurred in over 3% of fixations in the hand-washing task, their frequency fell to less than 1% in a control experiment. We propose that the look-ahead fixations represent a strategic deployment of attentional and visual resources to optimize information gathering during natural tasks.
ieeexplore.ieee.org
Showing the best result for this search. See all results