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The effects of face inversion on perceiving- and sensing-based change detection
Robin I Goodrich1, Andrew P Yonelinas1
1Department of Psychology and Center for Neuroscience, University of California, Davis.
Journal of Experimental Psychology. General
|May 14, 2019
Summary
Face inversion impairs our ability to identify specific facial features but not our basic detection of changes. This suggests face inversion affects conscious identification, not fundamental visual sensing.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Visual Perception
Background:
- Face perception is significantly impaired when faces are presented upside down compared to upright.
- The precise nature of this impairment, whether it affects feature identification or basic change detection, remains unclear.
Purpose of the Study:
- To investigate the impact of face inversion on perceiving-based versus sensing-based discriminations.
- To differentiate between the ability to detect a change and the ability to identify specific feature alterations in inverted faces.
Main Methods:
- Utilized confidence-based receiver operating characteristics (ROCs) within a change detection paradigm.
- Conducted two experiments to examine the effects of face inversion on perceiving and sensing capabilities.
Main Results:
- Face inversion reduced the probability of perceiving-based discriminations but did not affect sensing-based discriminations.
- Results from ROC estimates were consistent with participants' subjective experiences of perceiving and sensing.
- The face inversion effect was linked to a diminished capacity for reporting specific feature changes.
Conclusions:
- Face inversion impairs the conscious identification of facial features rather than the fundamental ability to sense a change.
- Sensing appears to rely on global visual differences, not holistic processing, in the context of face inversion.
- Findings clarify the mechanisms underlying the face inversion effect and visual perception processes.
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