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The Upper Eye Bias: Rotated Faces Draw Fixations to the Upper Eye
Nicolas Davidenko1, Hema Kopalle2, Bruce Bridgeman1
1Department of Psychology, University of California, Santa Cruz, CA, USA.
Perception
|December 28, 2018
Summary
When viewing rotated faces, people tend to look at the upper eye, overriding the usual left-gaze bias. This eye-tracking study reveals a new bias in facial perception.
Area of Science:
- Cognitive Psychology
- Neuroscience
- Visual Perception
Background:
- A consistent left-gaze bias is observed when viewing upright faces.
- The manifestation of this bias in rotated faces, where eye heights differ, remains unexplored.
Purpose of the Study:
- To investigate whether rotated faces elicit an upper eye fixation bias.
- To compare gaze biases between upright and rotated facial stimuli.
Main Methods:
- Two eye-tracking experiments were conducted.
- Participants judged facial expressions of upright and rotated faces.
- First and second fixation points were recorded.
Main Results:
- A strong upper eye fixation bias was observed in rotated faces, dominating the typical left-gaze bias.
- This bias was consistent across various face rotation angles (±11.25° to ±90°).
- Rotated faces attracted more overall eye-directed fixations than upright faces.
Conclusions:
- Facial orientation significantly influences gaze patterns, creating an upper eye bias.
- This finding has implications for understanding social cognition and visual attention mechanisms.
- Further research is needed to explore the underlying mechanisms of the upper eye bias.
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