Crossmodal duration perception involves perceptual grouping, temporal ventriloquism, and variable internal clock rates

Here, we investigate how audiovisual context affects perceived event duration with experiments in which observers reported which of two stimuli they perceived as longer. Target events were visual and/or auditory and could be accompanied by nontargets in the other modality. Our results demonstrate th...

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Bibliographic Details
Published in:Attention, perception & psychophysics perception & psychophysics, 2011-01, Vol.73 (1), p.219-236
Main Authors: Klink, P. Christiaan, Montijn, Jorrit S., van Wezel, Richard J. A.
Format: Article
Language:English
Subjects:
Adult
Association
Attention
Auditory Perception
Auditory Stimuli
Behavioral Science and Psychology
Biological and medical sciences
Brain
Cognitive Psychology
Decision Making
Differential Threshold
Female
Fundamental and applied biological sciences. Psychology
Humans
Judgment
Listening Comprehension
Male
Memory
Multimodal perception
Pattern Recognition, Visual
Perception
Perceptual Distortion
Pitch Perception
Psychology
Psychology. Psychoanalysis. Psychiatry
Psychology. Psychophysiology
Psychophysics
Sensory perception
Stimuli
Time Perception
Visual Stimuli
Young Adult
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Summary:Here, we investigate how audiovisual context affects perceived event duration with experiments in which observers reported which of two stimuli they perceived as longer. Target events were visual and/or auditory and could be accompanied by nontargets in the other modality. Our results demonstrate that the temporal information conveyed by irrelevant sounds is automatically used when the brain estimates visual durations but that irrelevant visual information does not affect perceived auditory duration (Experiment 1). We further show that auditory influences on subjective visual durations occur only when the temporal characteristics of the stimuli promote perceptual grouping (Experiments 1 and 2). Placed in the context of scalar expectancy theory of time perception, our third and fourth experiments have the implication that audiovisual context can lead both to changes in the rate of an internal clock and to temporal ventriloquism-like effects on perceived on- and offsets. Finally, intramodal grouping of auditory stimuli diminished any crossmodal effects, suggesting a strong preference for intramodal over crossmodal perceptual grouping (Experiment 5).
ISSN:1943-3921
1943-393X
DOI:10.3758/s13414-010-0010-9