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Impaired Face Feature-to-Location Statistical Learning and Single-Feature Discrimination in Developmental Prosopagnosia
,
Dan Morgan,
Jodie Davies-Thompson
Brain Sciences, Volume: 14, Issue: 8, Start page: 815
Swansea University Authors:
John Towler , Dan Morgan, Jodie Davies-Thompson
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DOI (Published version): 10.3390/brainsci14080815
Abstract
Individuals with developmental prosopagnosia (DP) experience severe face memory deficits that are often accompanied by impairments in face perception. Images of human facial features are better discriminated between when they are presented in the locations on the visual field that they typically app...
| Published in: | Brain Sciences |
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| ISSN: | 2076-3425 |
| Published: |
MDPI AG
2024
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| Online Access: |
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| URI: | https://cronfa.swan.ac.uk/Record/cronfa67547 |
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| Abstract: |
Individuals with developmental prosopagnosia (DP) experience severe face memory deficits that are often accompanied by impairments in face perception. Images of human facial features are better discriminated between when they are presented in the locations on the visual field that they typically appear in while viewing human faces in daily life, than in locations which they do not typically appear (i.e., better performance for eyes in the upper visual field, and better performance for mouths in the lower visual field). These feature-to-location tuning effects (FLEs) can be explained by a retinotopically organised visual statistical learning mechanism. We had a large group of DP participants (N = 64), a control group (N = 74) and a group of individuals with a mild form of DP (N = 58) complete a single-feature discrimination task to determine whether face perception deficits in DP can be accounted for by an impairment in face feature-to-location tuning. The results showed that individuals with DP did not have significant FLEs, suggesting a marked impairment in the underlying visual statistical learning mechanism. In contrast, the mild DP group showed normal FLE effects which did not differ from the control group. Both DP groups had impaired single-feature processing (SFP) as compared to the control group. We also examined the effects of age on FLEs and SFP. |
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| Keywords: |
prosopagnosia; face processing; retinotopic; feature processing; face map |
| College: |
Faculty of Medicine, Health and Life Sciences |
| Issue: |
8 |
| Start Page: |
815 |