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The More-or-Less Morphing Face Illusion Revisited : Perceiving Natural Transient Changes in Faces Despite Fast Saccades
Utz, Sandra; Carbon, Claus-Christian (2021): The More-or-Less Morphing Face Illusion Revisited : Perceiving Natural Transient Changes in Faces Despite Fast Saccades, in: Bamberg: Otto-Friedrich-Universität.
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Year of publication:
2021
Pages:
Source/Other editions:
i-Perception, 11 (2020), 4, 10 S. - ISSN: 2041-6695
Year of first publication:
2020
Language:
English
Abstract:
van Lier and Koning introduced the more-or-less morphing face illusion: The detection of changes in a constantly morphing face-sequence is strongly suppressed by fast eye saccades triggered by a moving fixation dot. Modulators of this intriguing effect were investigated with systematically varied facial stimuli (e.g., human faces from varying morphological groups, emotional states) and fixation location. Results replicated the overall pattern of moving fixations substantially reducing the sensitivity to detect transitions. Importantly, a deviation from real to perceived changes could only be detected when faces were altered in a way not happening in real world—by changing identity. When emotional states of faces were changed, people were capable of perceiving these changes: A situation very similar to everyday life where we might quickly inspect a face by executing fast eye saccades but where we are still aware of transient changes of the emotional state of the very same person.
Keywords: ; ; ; ; ; ; ;
face perception
face processing
more-or-less morphing face illusion
saccades
visual suppression
emotional expression
eye movements
fixation
Type:
Article
Activation date:
January 7, 2021
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https://fis.uni-bamberg.de/handle/uniba/49253