Presentation
Can Tactile Information be Used as a Cue in Time-to-Collision Estimation?
SessionPoster Session 1
DescriptionWe measured time-to-collision (TTC) judgments of (imaginary) approaching objects based on a 250-Hz vibrotactile stimulus delivered to the fingertips by a C-2 tactor. Changes in stimulus intensity simulated a sound source that approached a receiver. The vibration stopped after 1 s when the (imaginary) object’s actual TTC was between .5 s and 6 s. Participants were told to press a key when they thought the object would reach them. They also were told that intensity signified the object’s distance (less intense is farther). Mean estimated TTC increased as actual TTC increased, as it does in auditory and visual modalities, but the relationship was more compressed with tactile stimuli. Judgments were driven by final vibration intensity, rather than the object’s presented TTC, as we reported previously with auditory TTC estimation. Results have implications for the design of technologies used to aid drivers or pedestrians avoid collisions, particularly those with vision loss.
Event Type
Poster
TimeTuesday, October 14th5:30pm - 6:30pm CDT
LocationRiverside East
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