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Neural Temporal Dynamics of Facial Emotion Processing: Age Effects and Relationship to Cognitive Function
Xiaoyan Liao1,2, Kui Wang3,4, Kai Lin2
1Department of Psychology, School of Public Health, Southern Medical UniversityGuangzhou, China.
Frontiers in Psychology
|July 18, 2017
Summary
Older adults show distinct neural patterns when processing facial emotions, particularly negative ones. Cognitive function is linked to their accuracy in categorizing facial expressions.
Area of Science:
- Neuroscience
- Cognitive Psychology
- Gerontology
Background:
- Aging impacts cognitive functions, including facial emotion processing.
- Understanding age-related changes in neural dynamics is crucial for cognitive health.
Purpose of the Study:
- Investigate age-related differences in neural processing of facial emotions using event-related potentials (ERPs).
- Examine the relationship between facial emotion categorization and cognitive functions in older adults.
Main Methods:
- Presented negative, positive, and neutral facial expressions to young and older adults.
- Analyzed behavioral data and ERPs (N170, temporo-occipital activity) during a facial emotion categorization task.
Main Results:
- Older adults showed enhanced N170 for negative faces and altered N170 laterality for neutral faces.
- Distinct neural responses (sustained negativity vs. posterior positivity/frontal negativity) were observed between age groups.
- Decreased accuracy in labeling negative faces correlated with cognitive scores in older adults.
Conclusions:
- Older adults may exert more effort processing negative facial expressions, indicating potential selective deficits.
- Facial emotion categorization in older adults is influenced by cognitive functioning.
- Age-related changes in neural temporal dynamics affect how facial emotions are processed.
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