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Age mitigates the correlation between cognitive processing speed and audio-visual asynchrony detection in speech
1Department of Psychology, Norwegian University of Science and Technology, N-7491 Trondheim, Norway.
The Journal of the Acoustical Society of America
|November 7, 2014
Summary
Cognitive processing speed impacts audio-visual (AV) asynchrony detection. However, age-related AV experience appears to lessen this effect, particularly in middle-aged adults.
Area of Science:
- Auditory and Visual Perception
- Cognitive Neuroscience
- Human Factors Engineering
Background:
- Audio-visual (AV) asynchrony detection is influenced by hearing acuity and AV experience.
- The direct impact of cognitive processing speed on AV asynchrony perception remains under-explored.
- Understanding these factors is crucial for fields like speech perception and human-computer interaction.
Purpose of the Study:
- To investigate the relationship between cognitive processing speed and AV asynchrony detection in speech.
- To determine if age-related AV experience mitigates the influence of cognitive processing speed on AV asynchrony detection, while controlling for hearing acuity.
Main Methods:
- Assessed cognitive processing speed using auditory, visual, and AV reaction time tasks.
- Measured AV asynchrony detection using an AV synchrony judgment task.
- Compared young adults (20-30 years) and middle-aged adults (50-60 years), controlling for hearing acuity.
Main Results:
- Young adults showed strong correlations between reaction times and the AV synchrony window size.
- Middle-aged adults did not exhibit significant correlations between cognitive processing speed measures and AV asynchrony detection.
- Hearing acuity was controlled for in both age groups.
Conclusions:
- Cognitive processing speed significantly influences the detection of AV asynchrony in speech.
- Audio-visual experience, potentially linked to age, appears to reduce the impact of cognitive processing speed on AV asynchrony perception.
- These findings highlight the complex interplay between sensory processing, cognitive function, and experience in perceiving synchronized audio and visual information.
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