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An Experimental Paradigm for Measuring the Effects of Ageing on Sentence Processing
Published on: October 25, 2019
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Audio-visual speech experience with age influences perceived audio-visual asynchrony in speech
1Department of Psychology, Norwegian University of Science and Technology, N-7491 Trondheim, Norway.
The Journal of the Acoustical Society of America
|October 15, 2013
Summary
Middle-aged adults have less tolerance for audio-visual (AV) asynchrony than young adults. Experience fine-tunes AV synchrony perception, particularly for predictable audio-lead stimuli.
Area of Science:
- Auditory Perception
- Visual Perception
- Human Aging
Background:
- Audio-visual (AV) synchrony perception changes with age.
- Potential factors include sensory decline, processing speed, and AV experience.
- This study isolates the impact of AV experience on synchrony perception.
Purpose of the Study:
- To compare audio-visual synchrony judgments between young and middle-aged adults.
- To investigate the role of experience in modulating AV synchrony perception.
- To minimize the influence of cognitive processing speed differences.
Main Methods:
- Compared synchrony judgments in young adults (20-30 yrs) and middle-aged adults (50-60 yrs).
- Utilized audio-visual stop consonant syllables with varying asynchronies (-440 ms to +440 ms).
- Assessed tolerance for audio-lead and visual-lead stimuli.
Main Results:
- Middle-aged adults demonstrated significantly less tolerance for audio-lead asynchrony compared to young adults.
- A greater shift in the point of subjective simultaneity was observed in middle-aged adults.
- Findings suggest experience fine-tunes audio-lead synchrony perception.
Conclusions:
- Age-related differences in AV synchrony perception are influenced by experience.
- Predictability of audio-lead stimuli may enhance experience-related fine-tuning.
- Further research can explore the neural mechanisms underlying these perceptual shifts.
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