scholarly journals Face-Specific Pupil Contagion in Infants

2022 ◽  
Vol 12 ◽  
Author(s):  
Yuki Tsuji ◽  
So Kanazawa ◽  
Masami K. Yamaguchi
Keyword(s):  
Early Development ◽  
Pupil Diameter ◽  
Inversion Effect ◽  
Dynamic Changes ◽  
Face Inversion Effect ◽  
Development Stages ◽  
Face Inversion ◽  
Face Presentation ◽  
The Face ◽  
Inverted Face

Pupil contagion is the phenomenon in which an observer’s pupil-diameter changes in response to another person’s pupil. Even chimpanzees and infants in early development stages show pupil contagion. This study investigated whether dynamic changes in pupil diameter would induce changes in infants’ pupil diameter. We also investigated pupil contagion in the context of different faces. We measured the pupil-diameter of 50 five- to six-month-old infants in response to changes in the pupil diameter (dilating/constricting) of upright and inverted faces. The results showed that (1) in the upright presentation condition, dilating the pupil diameter induced a change in the infants’ pupil diameter while constricting the pupil diameter did not induce a change, and (2) pupil contagion occurred only in the upright face presentation, and not in the inverted face presentation. These results indicate the face-inversion effect in infants’ pupil contagion.

scholarly journals Visual Similarity Versus Mental Rotation For Inverted and Upright Faces.

2021 ◽  
Author(s):  
Sam S. Rakover ◽  
Rani A. Bar-On ◽  
Anna Gliklich
Keyword(s):  
Face Recognition ◽  
Mental Rotation ◽  
Visual Similarity ◽  
Cognitive System ◽  
Inversion Effect ◽  
Face Inversion Effect ◽  
Face Inversion ◽  
Major Interest ◽  
The Face ◽  
Inverted Face

Abstract A major interest of research in face recognition lies in explaining the Face Inversion Effect (FIE), in which the recognition of an inverted face is less successful than that of an upright face. However, prior research has devoted little effort to examining how the cognitive system handles comparison between upright and inverted faces. In two experiments, such comparison is found to be based on visual similarity rather than on mental rotation of the inverted face to upright. Visual similarity is based on certain elements mutual to the two faces, which resist the transformation of inversion. These elements are symmetrical or salient components of the face, such as round eyes or thick lips.

Face Inversion Effect Emerges Under Critical Configural Discrepancy

2010 ◽  
Vol 69 (3) ◽  
pp. 161-167 ◽  
Author(s):  
Jisien Yang ◽  
Adrian Schwaninger
Keyword(s):  
Face Recognition ◽  
Face Processing ◽  
Underlying Mechanism ◽  
Inversion Effect ◽  
Configural Processing ◽  
Major Contributor ◽  
Face Inversion Effect ◽  
Configural Information ◽  
Face Inversion ◽  
The Face

Configural processing has been considered the major contributor to the face inversion effect (FIE) in face recognition. However, most researchers have only obtained the FIE with one specific ratio of configural alteration. It remains unclear whether the ratio of configural alteration itself can mediate the occurrence of the FIE. We aimed to clarify this issue by manipulating the configural information parametrically using six different ratios, ranging from 4% to 24%. Participants were asked to judge whether a pair of faces were entirely identical or different. The paired faces that were to be compared were presented either simultaneously (Experiment 1) or sequentially (Experiment 2). Both experiments revealed that the FIE was observed only when the ratio of configural alteration was in the intermediate range. These results indicate that even though the FIE has been frequently adopted as an index to examine the underlying mechanism of face processing, the emergence of the FIE is not robust with any configural alteration but dependent on the ratio of configural alteration.

scholarly journals Using transcranial Direct Current Stimulation (tDCS) to investigate why faces are and are not special

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Ciro Civile ◽  
Samantha Quaglia ◽  
Emika Waguri ◽  
Maddy Ward ◽  
Rossy McLaren ◽  
...  
Keyword(s):  
Direct Current ◽  
Sham Group ◽  
Inversion Effect ◽  
Matching Task ◽  
Anodal Tdcs ◽  
Double Blind ◽  
Face Inversion Effect ◽  
Face Inversion ◽  
Subject Design ◽  
The Face

AbstractWe believe we are now in a position to answer the question, "Are faces special?" inasmuch as this applies to the face inversion effect (better performance for upright vs inverted faces). Using a double-blind, between-subject design, in two experiments (n = 96) we applied a specific tDCS procedure targeting the Fp3 area while participants performed a matching-task with faces (Experiment 1a) or checkerboards from a familiar prototype-defined category (Experiment 1b). Anodal tDCS eliminated the checkerboard inversion effect reliably obtained in the sham group, but only reduced it for faces (although the reduction was significant). Thus, there is a component to the face inversion effect that we are not affecting with a tDCS procedure that can eliminate the checkerboard inversion effect. We suggest that the reduction reflects the loss of an expertise-based component in the face inversion effect, and the residual is due to a face-specific component of that effect.

scholarly journals The time course of the face inversion effect

2010 ◽  
Vol 7 (9) ◽  
pp. 619-619
Author(s):  
C. Jacques ◽  
B. Rossion
Keyword(s):  
Time Course ◽  
Inversion Effect ◽  
Face Inversion Effect ◽  
Face Inversion ◽  
The Face

scholarly journals Are the face inversion effect and the composite face effect mediated by different spatial frequencies?

2010 ◽  
Vol 9 (8) ◽  
pp. 534-534
Author(s):  
V. Willenbockel ◽  
D. Fiset ◽  
M. Arguin ◽  
F. Lepore ◽  
F. Gosselin
Keyword(s):  
Inversion Effect ◽  
Face Inversion Effect ◽  
Face Inversion ◽  
Spatial Frequencies ◽  
The Face ◽  
Composite Face
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