alexa Speed, size, and edge-rate information for the detection of collision events.
General Science

General Science

Journal of Ergonomics

Author(s): Andersen GJ, Cisneros J, Atchley P, Saidpour A

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Abstract In the present study an alternative analysis to tau was considered that was based on perceived speed and size and that assumed constant deceleration for the detection of collision events. Observers were presented with displays simulating a 3-D environment with obstacles in the path of observer motion. During the trial, observer motion decelerated at a constant rate and was followed by a blackout prior to the end of the display. Observers had to detect which trials resulted in a collision. The results indicate that collision detection varied as a function of the size of the obstacles, observer speed, and edge rate--findings not predicted by an analysis of tau. The results suggest that observers use an analysis based on speed and size information. A model that assumes constant deceleration is proposed for braking control.
This article was published in J Exp Psychol Hum Percept Perform and referenced in Journal of Ergonomics

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