Mapping self-face recognition strategies in congenital prosopagnosia.

Malaspina, Manuela; Albonico, Andrea; Lao, Junpeng; Caldara, Roberto; Daini, Roberta

doi:10.1037/neu0000414

Cited by 10 publications

(7 citation statements)

References 72 publications

(147 reference statements)

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“…However, higher thresholds in prosopagnosic participants could also reflect their need to acquire more information to make facial judgments than controls. This could account for the fact that prosopagnosic participants spend more time and make more fixations when judging the identity of a face (Malaspina, Albonico, Lao, Caldara, & Daini, 2018;Malaspina, Albonico, Toneatto, & Daini, 2017;Schmalzl, Palermo, Green, Brunsdon, & Coltheart, 2008;Schwarzer et al, 2007). Their greater starting point evidence (A) may support this second possibility.…”

Section: Discussionmentioning

confidence: 92%

Search for Face Identity or Expression: Set Size Effects in Developmental Prosopagnosia

Djouab

Albonico

Yeung

et al. 2020

Journal of Cognitive Neuroscience

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The set size effect during visual search indexes the effects of processing load and thus the efficiency of perceptual mechanisms. Our goal was to investigate whether individuals with developmental prosopagnosia show increased set size effects when searching faces for face identity and how this compares to search for face expression. We tested 29 healthy individuals and 13 individuals with developmental prosopagnosia. Participants were shown sets of three to seven faces to judge whether the identities or expressions of the faces were the same across all stimuli or if one differed. The set size effect was the slope of the linear regression between the number of faces in the array and the response time. Accuracy was similar in both controls and prosopagnosic participants. Developmental prosopagnosic participants displayed increased set size effects in face identity search but not in expression search. Single-participant analyses reveal that 11 developmental prosopagnosic participants showed a putative classical dissociation, with impairments in identity but not expression search. Signal detection theory analysis showed that identity set size effects were highly reliable in discriminating prosopagnosic participants from controls. Finally, the set size ratios of same to different trials were consistent with the predictions of self-terminated serial search models for control participants and prosopagnosic participants engaged in expression search but deviated from those predictions for identity search by the prosopagnosic cohort. We conclude that the face set size effect reveals a highly prevalent and selective perceptual inefficiency for processing face identity in developmental prosopagnosia.

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Section: Discussionmentioning

confidence: 92%

Search for Face Identity or Expression: Set Size Effects in Developmental Prosopagnosia

Djouab

Albonico

Yeung

et al. 2020

Journal of Cognitive Neuroscience

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“…This pattern was not only found for the self-face but also for other familiar faces, thus indicating that familiarity might play another important role (Devue et al., 2009). When investigating differences in face-scanning strategies between unfamiliar faces and the self-face, no differences were obtained although a self-face advantage both in healthy and prosopagnosia subjects was shown (Malaspina et al., 2018). Subjects had to decide whether a chimeric face represented their own face or another unfamiliar face.…”

Section: Theoretical Backgroundmentioning

confidence: 99%

How We Perceive Others Resembling Us

2020

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Eye contact is essential for social cognition, acting as an important tool for social communication. While differences in face scanning patterns concerning familiarity have been thoroughly investigated, the impact of facial similarity on gaze behavior has not been examined yet. We addressed this topic by recording subjects’ eye-directed gazing while looking at faces that were individually created systematically varying in terms of similarity to the self-face and familiarity. Subjects’ self-faces were morphed into three other faces including a close friend of the same sex. Afterwards, they rated similarity to their self-face of those morphed face stimuli in a separate rating task. Our results show a general preference for the eyes’ area as well as differences regarding fixation patterns depending on similarity to the self-face. The lower the similarity to the self-face, the more fixations on the eyes’ area. Subjects’ ratings followed a linear line, indicating well-pronounced face perception. Nevertheless, other faces were rated faster than the self-face independent of familiarity, while morphed faces got the slowest ratings. Our results mirror the importance of similarity to the self-face as a factor shaping the way we look at the eyes of others explaining variance apart from familiarity.

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“…Notably, an advantage of one's face has been observed in face processing (i.e., self-face advantage; Sugiura et al, 2005;Ma and Han, 2010). This effect has been documented even in participants with difficulties recognizing faces, namely congenital prosopagnosics (Malaspina et al, 2018).…”

Section: Introductionmentioning

confidence: 99%

Look at me now! Enfacement illusion over computer-generated faces

Rocca

Gobbo²,

Tosi³

et al. 2023

Front. Hum. Neurosci.

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According to embodied cognition research, one’s bodily self-perception can be illusory and temporarily shifted toward an external body. Similarly, the so-called “enfacement illusion” induced with a synchronous multisensory stimulation over the self-face and an external face can result in implicit and explicit changes in the bodily self. The present study aimed to verify (i) the possibility of eliciting an enfacement illusion over computer-generated faces and (ii) which multisensory stimulation condition was more effective. A total of 23 participants were asked to look at a gender-matched avatar in three synchronous experimental conditions and three asynchronous control conditions (one for each stimulation: visuotactile, visuomotor, and simple exposure). After each condition, participants were asked to complete a questionnaire assessing both the embodiment and the enfacement sensations to address different facets of the illusion. Results suggest a stronger effect of synchronous vs. asynchronous stimulation, and the difference was more pronounced for the embodiment items of the questionnaire. We also found a greater effect of visuotactile and visuomotor stimulations as compared to the simple exposure condition. These findings support the enfacement illusion as a new paradigm to investigate the ownership of different face identities and the specific role of visuotactile and visuomotor stimulations with virtual reality stimuli.

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Mapping self-face recognition strategies in congenital prosopagnosia.

Abstract: Our data suggest that the self-face advantage emerges both in implicit and explicit recognition tasks in CPs as much as in good recognizers, and it is not linked to any specific visual exploration strategies. (PsycINFO Database Record

Cited by 10 publications

References 72 publications

Search for Face Identity or Expression: Set Size Effects in Developmental Prosopagnosia

Search for Face Identity or Expression: Set Size Effects in Developmental Prosopagnosia

How We Perceive Others Resembling Us

Look at me now! Enfacement illusion over computer-generated faces

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