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A Methodology for Capturing Joint Visual Attention Using Mobile Eye-Trackers
Published on: January 18, 2020
View-contingent aftereffects suggest joint coding of face shape and view
Lisa L M Welling1, Benedict C Jones, Patricia E G Bestelmeyer
1Face Research Laboratory, School of Psychology, University of Aberdeen, Aberdeen AB24 2UB, Scotland, UK. lisa.welling@abdn.ac.uk
Perception
|March 28, 2009
Summary
Neural populations code face views and shape. This study shows dissociable aftereffects for upright faces, suggesting neurons coding face view also process face shape, unlike inverted faces.
Area of Science:
- Neuroscience
- Cognitive Science
- Psychology
Background:
- Different neural populations are known to process distinct facial views.
- Behavioral evidence regarding whether these neurons also encode face shape aspects remains inconclusive.
- Previous research interpreted face aftereffect transfer across viewpoints ambiguously.
Purpose of the Study:
- To investigate if neurons coding face view also encode other face shape features.
- To determine if adaptation effects are view-specific or shape-specific.
- To explore the role of face orientation in face perception and coding.
Main Methods:
- Simultaneous adaptation to opposing mouth positions in 3/4 and front views of upright faces.
- Inducing face aftereffects in different directions for distinct facial views.
- Testing adaptation effects for both upright and inverted faces.
Main Results:
- Simultaneous adaptation to different mouth positions in 3/4 and front views induced opposing aftereffects.
- Upright faces showed view-contingent adaptation, affecting perception of novel faces.
- No such dissociable aftereffects were observed for inverted faces.
Conclusions:
- Neurons coding for face view can also process other aspects of face shape.
- Face perception mechanisms for upright faces are sensitive to both view and shape.
- Inverted face processing appears less sensitive to combined view and shape adaptation.
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