Interactions between the processing of gaze direction and facial expression.

Area of Science:

• Cognitive Psychology
• Neuroscience
• Visual Perception

Background:

• Understanding how humans process complex social cues from faces is crucial.
• Facial expressions and gaze direction are key elements in social interaction.
• The interplay between processing facial expressions and gaze direction remains an active research area.

Purpose of the Study:

• To investigate the interdependence between facial expression processing and gaze direction processing.
• To determine the role of configural versus part-based processing in this relationship.
• To elucidate the distinct computational mechanisms underlying expression and gaze judgments.

Main Methods:

• Experiment 1: Assessed interference between expression and gaze classification tasks.
• Experiment 2: Utilized face inversion to differentiate configural from part-based processing.
• Experiment 3 & 4: Manipulated gaze direction and facial stimuli (full face vs. eye region) to test sensitivity and interdependence.

Main Results:

• Initial interdependence observed: participants could not ignore gaze during expression classification, or vice versa.
• Face inversion disrupted expression-gaze interdependence, suggesting configural processing for expressions.
• Gaze judgments remained influenced by expression even with isolated eye regions, indicating part-based processing for gaze.

Conclusions:

• Expression processing is configural and obligatorily computes gaze direction.
• Gaze processing is part-based, relying on local features around the eyes and is insensitive to configural facial information.
• Distinct processing strategies underlie the perception of facial expression and gaze direction.