Strabismic amblyopia affects relational but not featural and Gestalt processing of faces

Faculty/Professorship: General Psychology and Methodology  
Author(s): Cattaneo, Zaira; Vecchi, Tomaso; Monegato, Maura; Pece, Alfredo; Merabet, Lotfi B.; Carbon, Claus-Christian  
Title of the Journal: Vision research : an international journal for functional aspects of vision
ISSN: 0042-6989
Publisher Information: Exeter : Elsevier Science
Year of publication: 2013
Volume: 80
Pages: 19-30 ; Illustrationen, Diagramme
Language(s): English
DOI: 10.1016/j.visres.2013.01.007
The ability to identify faces is of critical importance for normal social interactions. Previous evidence suggests
that early visual deprivation may impair certain aspects of face recognition. The effects of strabismic
amblyopia on face processing have not been investigated previously. In this study, a group of
individuals with amblyopia were administered two tasks known to selectively measure face detection
based on a Gestalt representation of a face (Mooney faces task) and featural and relational processing
of faces (Jane faces task). Our data show that – when relying on their amblyopic eye only – strabismic
amblyopes perform as well as normally sighted individuals in face detection and recognition on the basis
of their single features. However, they are significantly impaired in discriminating among different faces
on the basis of the spacing of their single features (i.e., configural processing of relational information).
Our findings are the first to demonstrate that strabismic amblyopia may cause specific deficits in face recognition,
and add to previous reports characterizing visual perceptual deficits associated in amblyopia as
high-level and not only as low-level processing.
Keywords: face processing, Amblyopia, face detection, hemisphere, laterality, recognition, Strabismus, dissociation
Peer Reviewed: Ja
International Distribution: Ja
Type: Article
Year of publication: 31. October 2013