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Updated: Jul 11, 2026
07:13
A Two-interval Forced-choice Task for Multisensory Comparisons
Published on: November 9, 2018
Discrimination of time intervals presented in sequences: spatial effects with multiple auditory sources.
Simon Grondin1, Marilyn Plourde
1Ecole de psychologie, Université Laval, Québec, QC, Canada G1K 7P4. simon.grondin@psy.ulaval.ca
Human Movement Science
|October 2, 2007
Summary
Temporal processing is impaired with rapid auditory signals, especially at 75 ms. Sound source location and sequence direction can influence time perception, particularly when uncertainty is present.
Area of Science:
- Auditory perception
- Psychophysics
- Human factors
Background:
- Temporal discrimination is crucial for auditory processing.
- Understanding how auditory signal presentation affects time perception is key.
Purpose of the Study:
- To investigate the discrimination of time intervals marked by auditory signals.
- To examine the influence of signal presentation mode and location on temporal perception.
Main Methods:
- Two experiments were conducted involving participants discriminating time intervals.
- Experiment 1 varied sound presentation (headphones, single-speaker, multi-speaker).
- Experiment 2 manipulated the location of the final auditory signal.
Main Results:
- Temporal processing was impaired at shorter base durations (75 ms).
- A 'time-shrinking effect' was observed at 75 ms but not 225 ms.
- Uncertainty in final signal location and sequence direction affected perceived duration.
Conclusions:
- Rapid auditory signals degrade temporal discrimination.
- Spatial factors and directional cues can modulate perceived duration, especially under uncertainty.
- Auditory signal presentation significantly impacts temporal interval discrimination.
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