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Published on: September 5, 2019
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Dual-task interference on left eye utilization during facial emotion perception
Justin Duncan1, Gabrielle Dugas1, Benoit Brisson2
1Department of Psychoeducation and Psychology.
Summary
Facial emotion perception may not be fully automatic. Central attention load reduced reliance on the left eye, suggesting non-automatic processing, while mouth processing remained automatic.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Social Psychology
Background:
- Facial emotion perception is debated regarding automaticity.
- Spatial attention is crucial, but central attention's role is unclear.
- Previous research links spatial attention to eye and high spatial frequency processing.
Purpose of the Study:
- Investigate the automaticity of facial emotion perception under central attention load.
- Examine how central cognitive load affects reliance on different facial features.
- Explore potential hemispheric asymmetries in facial processing.
Main Methods:
- Utilized the bubbles method to measure diagnostic information for basic facial expressions.
- Assessed the psychological refractory period (PRP) effect.
- Manipulated central cognitive load with a prioritized auditory task.
Main Results:
- Central load significantly decreased left eye utilization across emotions.
- Mouth utilization remained unaffected by central load.
- Reduced left-face reliance correlated with increased right-face reliance under load.
Conclusions:
- Left eye processing appears non-automatic, while mouth processing may be automatic.
- Hemispheric asymmetries might explain the shift in facial feature reliance.
- Facial emotion perception is not fully automatic and is influenced by attentional resources.
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