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A Two-interval Forced-choice Task for Multisensory Comparisons
Published on: November 9, 2018
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Opposite Distortions in Interval Timing Perception for Visual and Auditory Stimuli with Temporal Modulations
Kenichi Yuasa1, Yuko Yotsumoto1
1Department of Life Sciences, The University of Tokyo, Tokyo, Japan.
Plos One
|August 21, 2015
Summary
Visual and auditory stimuli affect time perception differently. While visual flickers overestimate duration, auditory flutters underestimate it. These sensory systems interact but possess independent mechanisms for processing time intervals.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Sensory Perception
Background:
- Visual stimuli that move or flicker often lead to overestimation of perceived duration, a phenomenon known as time dilation.
- Auditory stimuli, like fluttering sounds, can also distort time perception, but the underlying mechanisms and their relation to visual processing are not fully understood.
Purpose of the Study:
- To investigate whether visual and auditory interval timing share common mechanisms.
- To measure interval timing perception by modulating temporal characteristics of visual and auditory stimuli.
Main Methods:
- Participants compared durations of flickering visual stimuli or fluttering auditory stimuli against continuously presented standard stimuli.
- Temporal characteristics of visual and auditory stimuli were modulated.
Main Results:
- Auditory flutters led to an underestimation of perceived duration, while visual flickers caused an overestimation.
- Simultaneous presentation of auditory and visual stimuli cancelled out individual distortion effects.
- Auditory flutters influenced the interval timing perception of concurrent visual stimuli.
Conclusions:
- Interval timing perception is regulated by distinct mechanisms for visual and auditory processing.
- There are interactive influences between the visual and auditory processing systems in time perception.
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