scholarly journals Facial identity and facial expression processing dissociate in developmental prosopagnosia

2018 ◽  
Vol 18 (10) ◽  
pp. 918
Author(s):  
Lauren Bell ◽  
Tirta Susilo
Keyword(s):  
Facial Expression ◽  
Facial Identity ◽  
Expression Processing

scholarly journals Facial expression processing in developmental prosopagnosia

2021 ◽  
Author(s):  
◽  
Lauren Clare Bell
Keyword(s):  
Facial Expression ◽  
Expression Recognition ◽  
Facial Identity ◽  
Video Clips ◽  
Core Deficit ◽  
Identity Perception ◽  
Expression Processing ◽  
Sequential Matching ◽  
Identity Processing ◽  
Inversion Effects

<p>Individuals with developmental prosopagnosia experience lifelong deficits recognising facial identity, but whether their ability to process facial expression is also impaired is unclear. Addressing this issue is key for understanding the core deficit in developmental prosopagnosia, and for advancing knowledge about the mechanisms and development of normal face processing. In this thesis, I report two online studies on facial expression processing with large samples of prosopagnosics. In Study 1, I compared facial expression and facial identity perception in 124 prosopagnosics and 133 controls. I used three perceptual tasks including simultaneous matching, sequential matching, and sorting. I also measured inversion effects to examine whether prosopagnosics rely on typical face mechanisms. Prosopagnosics showed subtle deficits with facial expression, but they performed worse with facial identity. Prosopagnosics also showed reduced inversion effects for facial identity but normal inversion effects for facial expression, suggesting they use atypical mechanisms for facial identity but normal mechanisms for facial expression. In Study 2, I extended the findings of Study 1 by assessing facial expression recognition in 78 prosopagnosics and 138 controls. I used four labelling tasks that varied on whether the facial expressions were basic (e.g., happy) or complex (e.g., elated), and whether they were displayed via static (i.e., images) or dynamic (i.e., video clips) stimuli. Prosopagnosics showed subtle deficits with basic expressions but performed normally with complex expressions. Further, prosopagnosics did not show reduced inversion effects for both types of expressions, suggesting they use similar recognition mechanisms as controls. Critically, the subtle expression deficits that prosopagnosics showed in both studies can be accounted for by autism traits, suggesting that expression deficits are not a feature of prosopagnosia per se. I also provide estimates of the prevalence of deficits in facial expression perception (7.70%) and recognition (2.56% - 5.13%) in prosopagnosia, both of which suggest that facial expression processing is normal in the majority of prosopagnosics. Overall, my thesis demonstrates that facial expression processing is not impaired in developmental prosopagnosia, and suggests that facial expression and facial identity processing rely on separate mechanisms that dissociate in development.</p>

scholarly journals Facial expression processing in developmental prosopagnosia

2021 ◽  
Author(s):  
◽  
Lauren Clare Bell
Keyword(s):  
Facial Expression ◽  
Expression Recognition ◽  
Facial Identity ◽  
Video Clips ◽  
Core Deficit ◽  
Identity Perception ◽  
Expression Processing ◽  
Sequential Matching ◽  
Identity Processing ◽  
Inversion Effects

<p>Individuals with developmental prosopagnosia experience lifelong deficits recognising facial identity, but whether their ability to process facial expression is also impaired is unclear. Addressing this issue is key for understanding the core deficit in developmental prosopagnosia, and for advancing knowledge about the mechanisms and development of normal face processing. In this thesis, I report two online studies on facial expression processing with large samples of prosopagnosics. In Study 1, I compared facial expression and facial identity perception in 124 prosopagnosics and 133 controls. I used three perceptual tasks including simultaneous matching, sequential matching, and sorting. I also measured inversion effects to examine whether prosopagnosics rely on typical face mechanisms. Prosopagnosics showed subtle deficits with facial expression, but they performed worse with facial identity. Prosopagnosics also showed reduced inversion effects for facial identity but normal inversion effects for facial expression, suggesting they use atypical mechanisms for facial identity but normal mechanisms for facial expression. In Study 2, I extended the findings of Study 1 by assessing facial expression recognition in 78 prosopagnosics and 138 controls. I used four labelling tasks that varied on whether the facial expressions were basic (e.g., happy) or complex (e.g., elated), and whether they were displayed via static (i.e., images) or dynamic (i.e., video clips) stimuli. Prosopagnosics showed subtle deficits with basic expressions but performed normally with complex expressions. Further, prosopagnosics did not show reduced inversion effects for both types of expressions, suggesting they use similar recognition mechanisms as controls. Critically, the subtle expression deficits that prosopagnosics showed in both studies can be accounted for by autism traits, suggesting that expression deficits are not a feature of prosopagnosia per se. I also provide estimates of the prevalence of deficits in facial expression perception (7.70%) and recognition (2.56% - 5.13%) in prosopagnosia, both of which suggest that facial expression processing is normal in the majority of prosopagnosics. Overall, my thesis demonstrates that facial expression processing is not impaired in developmental prosopagnosia, and suggests that facial expression and facial identity processing rely on separate mechanisms that dissociate in development.</p>

scholarly journals Do facial identity and facial expression processing dissociate in prosopagnosia?

2010 ◽  
Vol 7 (9) ◽  
pp. 939-939
Author(s):  
L. Garrido ◽  
B. Duchaine
Keyword(s):  
Facial Expression ◽  
Facial Identity ◽  
Expression Processing

Retinotopy of Facial Expression Adaptation

2014 ◽  
Vol 27 (2) ◽  
pp. 127-137 ◽  
Author(s):  
Kazumichi Matsumiya
Keyword(s):  
Facial Expression ◽  
Facial Identity ◽  
Adaptation Mechanisms ◽  
The Face ◽  
Test Face ◽  
Adaptation Test ◽  
Test Distance ◽  
Expression Processing ◽  
Identity Processing

The face aftereffect (FAE; the illusion of faces after adaptation to a face) has been reported to occur without retinal overlap between adaptor and test, but recent studies revealed that the FAE is not constant across all test locations, which suggests that the FAE is also retinotopic. However, it remains unclear whether the characteristic of the retinotopy of the FAE for one facial aspect is the same as that of the FAE for another facial aspect. In the research reported here, an examination of the retinotopy of the FAE for facial expression indicated that the facial expression aftereffect occurs without retinal overlap between adaptor and test, and depends on the retinal distance between them. Furthermore, the results indicate that, although dependence of the FAE on adaptation-test distance is similar between facial expression and facial identity, the FAE for facial identity is larger than that for facial expression when a test face is presented in the opposite hemifield. On the basis of these results, I discuss adaptation mechanisms underlying facial expression processing and facial identity processing for the retinotopy of the FAE.

The Impact of Pre-Service Teachers' Emotional Complexity on Facial Expression Processing: Evidences from Behavioral, ERP and Eye-Movement Study

2015 ◽  
Vol 47 (1) ◽  
pp. 50
Author(s):  
Haibin WANG ◽  
Jiamei LU ◽  
Benxian YAO ◽  
Qingsong SANG ◽  
Ning CHEN ◽  
...  
Keyword(s):  
Facial Expression ◽  
Eye Movement ◽  
Movement Study ◽  
Emotional Complexity ◽  
The Impact ◽  
Expression Processing

scholarly journals Altering sensorimotor simulation impacts early stages of facial expression processing depending on individual differences in alexithymic traits

2021 ◽  
Vol 148 ◽  
pp. 105678 ◽  
Author(s):  
Arianna Schiano Lomoriello ◽  
Antonio Maffei ◽  
Sabrina Brigadoi ◽  
Paola Sessa
Keyword(s):  
Individual Differences ◽  
Facial Expression ◽  
Early Stages ◽  
Expression Processing

scholarly journals Does Gaze Direction Modulate Facial Expression Processing in Children With Autism Spectrum Disorder?

2009 ◽  
Vol 80 (4) ◽  
pp. 1134-1146 ◽  
Author(s):  
Hironori Akechi ◽  
Atsushi Senju ◽  
Yukiko Kikuchi ◽  
Yoshikuni Tojo ◽  
Hiroo Osanai ◽  
...  
Keyword(s):  
Autism Spectrum Disorder ◽  
Facial Expression ◽  
Children With Autism ◽  
Autism Spectrum ◽  
Spectrum Disorder ◽  
Gaze Direction ◽  
Expression Processing

scholarly journals Evidence for Holistic Facial Expression Processing with a Neurocomputational Model

2013 ◽  
Vol 13 (9) ◽  
pp. 99-99 ◽  
Author(s):  
A. Omigbodun ◽  
G. Cottrell
Keyword(s):  
Facial Expression ◽  
Expression Processing

scholarly journals Involuntary Facial Expression Processing: Extracting Information from Two Simultaneously Presented Faces

PLoS ONE ◽  
2011 ◽  
Vol 6 (7) ◽  
pp. e22287 ◽  
Author(s):  
Samantha Baggott ◽  
Romina Palermo ◽  
Mark A. Williams
Keyword(s):  
Facial Expression ◽  
Expression Processing

scholarly journals It doesn't matter how you feel. The facial identity aftereffect is invariant to changes in facial expression

2008 ◽  
Vol 8 (3) ◽  
pp. 11 ◽  
Author(s):  
Christopher J. Fox ◽  
Ipek Oruç ◽  
Jason J. S. Barton
Keyword(s):  
Facial Expression ◽  
Facial Identity
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