Change Detection on Periphery and Dual-Task Performance

Abstract

A variation of the Wickens' Task was performed to examine the assumption that people can detect certain stimuli on their periphery without decreasing the performance of the primary task. Participants were instructed to respond to a change in a peripheral stimulus without shifting their gaze from a primary task in the center of their visual field. Our data suggests that both type and magnitude of change have a significant effect on detection rate and reaction time. The data also suggests that the performance of the primary task did not decay after the change of the stimuli occurred. Based on these findings, we argue that people can detect various types of changes without shifting gaze and without degrading task performance. Therefore, an interface particularly designed for peripheral vision is possible, and it will potentially provide benefits to both productivity and safety.

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