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Nørkær E, Gobbo S, Roald T, Starrfelt R. Disentangling developmental prosopagnosia: A scoping review of terms, tools and topics. Cortex 2024; 176:161-193. [PMID: 38795651 DOI: 10.1016/j.cortex.2024.04.011] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/20/2023] [Revised: 03/08/2024] [Accepted: 04/30/2024] [Indexed: 05/28/2024]
Abstract
The goal of this preregistered scoping review is to create an overview of the research on developmental prosopagnosia (DP). Through analysis of all empirical studies of DP in adults, we investigate 1) how DP is conceptualized and defined, 2) how individuals are classified with DP and 3) which aspects of DP are investigated in the literature. We reviewed 224 peer-reviewed studies of DP. Our analysis of the literature reveals that while DP is predominantly defined as a lifelong face recognition impairment in the absence of acquired brain injury and intellectual/cognitive problems, there is far from consensus on the specifics of the definition with some studies emphasizing e.g., deficits in face perception, discrimination and/or matching as core characteristics of DP. These differences in DP definitions is further reflected in the vast heterogeneity in classification procedures. Only about half of the included studies explicitly state how they classify individuals with DP, and these studies adopt 40 different assessment tools. The two most frequently studied aspects of DP are the role of holistic processing and the specificity of face processing, and alongside a substantial body of neuroimaging studies of DP, this paints a picture of a research field whose scientific interests and aims are rooted in cognitive neuropsychology and neuroscience. We argue that these roots - alongside the heterogeneity in DP definition and classification - may have limited the scope and interest of DP research unnecessarily, and we point to new avenues of research for the field.
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Affiliation(s)
- Erling Nørkær
- Department of Psychology, University of Copenhagen, Denmark.
| | - Silvia Gobbo
- Department of Psychology, Università degli Studi di Milano-Bicocca, Italy
| | - Tone Roald
- Department of Psychology, University of Copenhagen, Denmark
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Romein EJ, Groot ALW, Remmers JS, Lissenberg B, Moll AC, Saeed P, Hartong DT. Determining Asymmetry Thresholds in Anophthalmia/Microphthalmia Using a Three-dimensional Animated Model. Ophthalmic Plast Reconstr Surg 2024:00002341-990000000-00419. [PMID: 38934734 DOI: 10.1097/iop.0000000000002711] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 06/28/2024]
Abstract
PURPOSE Congenital microphthalmia and anophthalmia are rare development disorders with underdevelopment of the orbital region, resulting in asymmetry of the face. No clear guidelines exist to determine when these deviations are acceptable. METHODS The face of a healthy 6-year-old child was three-dimensionally scanned. On this scan, we modeled various incremental degrees of facial asymmetries using three-dimensional modeling software. We modeled for smaller palpebral fissures, sunken eyes, and downward displacement of the eye. We also tested whether adjusting the vertical palpebral fissure height in relation to the horizontal palpebral fissure width affected perception. A total of 22 videos were created in which the model turned the head horizontally and vertically. We created a questionnaire asking raters how acceptable the face is, on a linear scale from 0 to 10. RESULTS Results showed a correlation between the degree of asymmetry and the acceptability score of the raters. Enophthalmos of ≥6 mm, palpebral fissure width ≤79% compared with the other eye, and 2 mm or more downward displacement of the eye resulted in a significant different acceptability score. The desire for correction was strongly increased when these thresholds were exceeded. Adjusting the vertical palpebral fissure height to the horizontal palpebral fissure width resulted in a worse acceptability score. CONCLUSION A unilateral sunken eye (enophthalmos) of 6 mm or more, asymmetric horizontal palpebral fissure length of ≤79%, and a lower position of one eye of more than 2 mm resulted in unacceptable judgment. These data can be used to evaluate treatment outcome in children treated for congenital microphthalmia and anophthalmia.
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Affiliation(s)
- Emiel J Romein
- Department of Ophthalmology, Amsterdam UMC, University of Amsterdam, Amsterdam Orbital Center, Amsterdam, Netherlands
| | - Annabel L W Groot
- Department of Ophthalmology, Amsterdam UMC, University of Amsterdam, Amsterdam Orbital Center, Amsterdam, Netherlands
| | - Jelmer S Remmers
- Department of Ophthalmology, Amsterdam UMC, University of Amsterdam, Amsterdam Orbital Center, Amsterdam, Netherlands
| | - Birgit Lissenberg
- Department Epidemiology and Data Sciences, Amsterdam UMC, Vrije Universiteit Amsterdam, de Amsterdam, Netherlands
| | - Annette C Moll
- Department of Ophthalmology, Amsterdam UMC, University of Amsterdam, Amsterdam Orbital Center, Amsterdam, Netherlands
- Amsterdam UMC, Vrije Universiteit Amsterdam, Cancer Center Amsterdam, Amsterdam, The Netherlands
| | - Peerooz Saeed
- Department of Ophthalmology, Amsterdam UMC, University of Amsterdam, Amsterdam Orbital Center, Amsterdam, Netherlands
| | - Dyonne T Hartong
- Department of Ophthalmology, Amsterdam UMC, University of Amsterdam, Amsterdam Orbital Center, Amsterdam, Netherlands
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Davies-Thompson J, Morgan D, Davis JP, Towler JR. Face Feature Change Detection Ability in Developmental Prosopagnosia and Super-Recognisers. Brain Sci 2024; 14:561. [PMID: 38928560 PMCID: PMC11201608 DOI: 10.3390/brainsci14060561] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/08/2024] [Revised: 05/27/2024] [Accepted: 05/28/2024] [Indexed: 06/28/2024] Open
Abstract
In non-clinical populations, facial features (eyes, nose, mouth) may vary in their contribution to face identity perception. Changes to whole faces are easier to detect than changes to individual features, and eye changes are typically easier to detect than mouth changes, which in turn are easier to detect than nose changes. However, how this differs for people with face recognition difficulties (developmental prosopagnosia; DP) and for individuals with superior face recognition abilities (super-recognisers; SR) is not clear; although findings from previous studies have suggested differences, the nature of this difference is not understood. The aim of this study was to examine whether differences in the ability to detect feature changes in DPs and SRs were (a) quantitative, meaning that the pattern across feature changes remained the same but there was an overall upwards or downwards shift in performance, or (b) qualitative, meaning that the pattern across feature changes was different. Using a change detection task in which individual face features (eyes, nose, mouth) changed between sequentially presented faces, we found that while prosopagnosics showed a quantitative difference in performance with a downwards shift across all conditions, super-recognisers only showed qualitative differences: they were better able to detect when the face was the same and were marginally (but not non-significantly) worse at detecting when the eyes changed. Further, the only condition which distinguished between the three groups was the ability to identify when the same face was presented, with SRs being better than controls, and controls being better than DPs. Our findings suggest that, in feature-matching tasks, differences for DPs are due to them being overall worse at the task, while SRs use a qualitatively different strategy.
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Affiliation(s)
- Jodie Davies-Thompson
- School of Psychology, Vivian Tower, Faculty of Medicine, Human & Health Sciences, Swansea University, Swansea SA2 8PP, UK (J.R.T.)
| | - Daniel Morgan
- School of Psychology, Vivian Tower, Faculty of Medicine, Human & Health Sciences, Swansea University, Swansea SA2 8PP, UK (J.R.T.)
| | | | - John R. Towler
- School of Psychology, Vivian Tower, Faculty of Medicine, Human & Health Sciences, Swansea University, Swansea SA2 8PP, UK (J.R.T.)
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Halder T, Ludwig K, Schenk T. Binocular rivalry reveals differential face processing in congenital prosopagnosia. Sci Rep 2024; 14:6687. [PMID: 38509151 PMCID: PMC10954711 DOI: 10.1038/s41598-024-55023-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2023] [Accepted: 02/16/2024] [Indexed: 03/22/2024] Open
Abstract
Congenital Prosopagnosia (CP) is an innate impairment in face perception with heterogeneous characteristics. It is still unclear if and to what degree holistic processing of faces is disrupted in CP. Such disruption would be expected to lead to a focus on local features of the face. In this study, we used binocular rivalry (BR) to implicitly measure face perception in conditions that favour holistic or local processing. The underlying assumption is that if stimulus saliency affects the perceptual dominance of a given stimulus in BR, one can deduce how salient a stimulus is for a given group (here: participants with and without CP) based on the measured perceptual dominance. A further open question is whether the deficit in face processing in CP extends to the processing of the facial display of emotions. In experiment 1, we compared predominance of upright and inverted faces displaying different emotions (fearful, happy, neutral) vs. houses between participants with CP (N = 21) and with normal face perception (N = 21). The results suggest that CP observers process emotions in faces automatically but rely more on local features than controls. The inversion of faces, which is supposed to disturb holistic processing, affected controls in a more pronounced way than participants with CP. In experiment 2, we introduced the Thatcher effect in BR by inverting the eye and mouth regions of the presented faces in the hope of further increasing the effect of face inversion. However, our expectations were not borne out by the results. Critically, both experiments showed that inversion effects were more pronounced in controls than in CP, suggesting that holistic face processing is less relevant in CP. We find BR to be a useful implicit test for assessing visual processing specificities in neurological participants.
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Affiliation(s)
- Theresa Halder
- Clinical Neuropsychology, Department of Psychology, Ludwig-Maximilians-Universität München, Leopoldstraße 13, 80802, München, Germany.
| | - Karin Ludwig
- Clinical Neuropsychology, Department of Psychology, Ludwig-Maximilians-Universität München, Leopoldstraße 13, 80802, München, Germany
| | - Thomas Schenk
- Clinical Neuropsychology, Department of Psychology, Ludwig-Maximilians-Universität München, Leopoldstraße 13, 80802, München, Germany.
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DeGutis J, Bahierathan K, Barahona K, Lee E, Evans TC, Shin HM, Mishra M, Likitlersuang J, Wilmer JB. What is the prevalence of developmental prosopagnosia? An empirical assessment of different diagnostic cutoffs. Cortex 2023; 161:51-64. [PMID: 36905701 PMCID: PMC10065901 DOI: 10.1016/j.cortex.2022.12.014] [Citation(s) in RCA: 11] [Impact Index Per Article: 11.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 10/23/2022] [Accepted: 12/19/2022] [Indexed: 02/05/2023]
Abstract
The prevalence of developmental prosopagnosia (DP), lifelong face recognition deficits, is widely reported to be 2-2.5%. However, DP has been diagnosed in different ways across studies, resulting in differing prevalence rates. In the current investigation, we estimated the range of DP prevalence by administering well-validated objective and subjective face recognition measures to an unselected web-based sample of 3116 18-55 year-olds and applying DP diagnostic cutoffs from the last 14 years. We found estimated prevalence rates ranged from .64-5.42% when using a z-score approach and .13-2.95% when using a percentile approach, with the most commonly used cutoffs by researchers having a prevalence rate of .93% (z-score, .45% when using percentiles). We next used multiple cluster analyses to examine whether there was a natural grouping of poorer face recognizers but failed to find consistent grouping beyond those with generally above versus below average face recognition. Lastly, we investigated whether DP studies with more relaxed diagnostic cutoffs were associated with better performance on the Cambridge Face Perception Test. In a sample of 43 studies, there was a weak nonsignificant association between greater diagnostic strictness and better DP face perception accuracy (Kendall's tau-b correlation, τb =.18 z-score; τb = .11 percentiles). Together, these results suggest that researchers have used more conservative DP diagnostic cutoffs than the widely reported 2-2.5% prevalence. We discuss the strengths and weaknesses of using more inclusive cutoffs, such as identifying mild and major forms of DP based on DSM-5.
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Affiliation(s)
- Joseph DeGutis
- Boston Attention and Learning Laboratory, VA Boston Healthcare System, Boston, MA, USA; Department of Psychiatry, Harvard Medical School, Boston, MA, USA.
| | - Kanisha Bahierathan
- Boston Attention and Learning Laboratory, VA Boston Healthcare System, Boston, MA, USA; Department of Psychiatry, Harvard Medical School, Boston, MA, USA
| | - Katherine Barahona
- Boston Attention and Learning Laboratory, VA Boston Healthcare System, Boston, MA, USA; Department of Psychiatry, Harvard Medical School, Boston, MA, USA
| | - EunMyoung Lee
- Boston Attention and Learning Laboratory, VA Boston Healthcare System, Boston, MA, USA; Department of Psychiatry, Harvard Medical School, Boston, MA, USA
| | - Travis C Evans
- Boston Attention and Learning Laboratory, VA Boston Healthcare System, Boston, MA, USA; Department of Psychiatry, Harvard Medical School, Boston, MA, USA
| | - Hye Min Shin
- Boston Attention and Learning Laboratory, VA Boston Healthcare System, Boston, MA, USA
| | - Maruti Mishra
- Department of Psychology, University of Richmond, Richmond, VA, USA
| | - Jirapat Likitlersuang
- Boston Attention and Learning Laboratory, VA Boston Healthcare System, Boston, MA, USA; Department of Psychiatry, Harvard Medical School, Boston, MA, USA
| | - Jeremy B Wilmer
- Department of Psychology, Wellesley College, Wellesley, MA, USA
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Rahavi A, Malaspina M, Albonico A, Barton JJS. "Looking at nothing": An implicit ocular motor index of face recognition in developmental prosopagnosia. Cogn Neuropsychol 2023; 40:59-70. [PMID: 37612792 DOI: 10.1080/02643294.2023.2250510] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2022] [Revised: 06/29/2023] [Accepted: 07/02/2023] [Indexed: 08/25/2023]
Abstract
Subjects often look towards to previous location of a stimulus related to a task even when that stimulus is no longer visible. In this study we asked whether this effect would be preserved or reduced in subjects with developmental prosopagnosia. Participants learned faces presented in video-clips and then saw a brief montage of four faces, which was replaced by a screen with empty boxes, at which time they indicated whether the learned face had been present in the montage. Control subjects were more likely to look at the blank location where the learned face had appeared, on both hit and miss trials, though the effect was larger on hit trials. Prosopagnosic subjects showed a reduced effect, though still better on hit than on miss trials. We conclude that explicit accuracy and our implicit looking at nothing effect are parallel effects reflecting the strength of the neural activity underlying face recognition.
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Affiliation(s)
- Aida Rahavi
- Human Vision and Eye Movement Laboratory, Ophthalmology and Visual Sciences, University of British Columbia, Vancouver, Canada
| | - Manuela Malaspina
- Human Vision and Eye Movement Laboratory, Ophthalmology and Visual Sciences, University of British Columbia, Vancouver, Canada
| | - Andrea Albonico
- Human Vision and Eye Movement Laboratory, Ophthalmology and Visual Sciences, University of British Columbia, Vancouver, Canada
| | - Jason J S Barton
- Departments of Medicine (Neurology), University of British Columbia, Vancouver, Canada
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Albonico A, Yu S, Corrow SL, Barton JJS. Facial identity and facial speech processing in developmental prosopagnosia. Neuropsychologia 2022; 168:108163. [DOI: 10.1016/j.neuropsychologia.2022.108163] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/12/2021] [Revised: 12/20/2021] [Accepted: 01/21/2022] [Indexed: 11/16/2022]
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Wilcockson TD, Burns EJ, Xia B, Tree J, Crawford TJ. Atypically heterogeneous vertical first fixations to faces in a case series of people with developmental prosopagnosia. VISUAL COGNITION 2020. [DOI: 10.1080/13506285.2020.1797968] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Affiliation(s)
- Thomas D.W. Wilcockson
- School of Sport, Exercise and Health Sciences, Loughborough University, Loughborough, UK
- Psychology Department, Lancaster University, Lancaster, UK
| | | | - Baiqiang Xia
- Faculty of Information Technology and Electrical Engineering, University of Oulu, Finland
| | - Jeremy Tree
- Psychology Department, Swansea University, Swansea, UK
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Djouab S, Albonico A, Yeung SC, Malaspina M, Mogard A, Wahlberg R, Corrow SL, Barton JJS. Search for Face Identity or Expression: Set Size Effects in Developmental Prosopagnosia. J Cogn Neurosci 2020; 32:889-905. [PMID: 31905091 DOI: 10.1162/jocn_a_01519] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/19/2023]
Abstract
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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Affiliation(s)
- Sara Djouab
- University of British Columbia.,University of Auvergne, Clermont-Ferrand, France
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