title: Aberrant patterns of visual facial information usage in schizophrenia.
abstract: Deficits in facial emotion perception have been linked to poorer functional outcome in schizophrenia. However, the relationship between abnormal emotion perception and functional outcome remains poorly understood. To better understand the nature of facial emotion perception deficits in schizophrenia, we used the Bubbles Facial Emotion Perception Task to identify differences in usage of visual facial information in schizophrenia patients (n = 20) and controls (n = 20), when differentiating between angry and neutral facial expressions. As hypothesized, schizophrenia patients required more facial information than controls to accurately differentiate between angry and neutral facial expressions, and they relied on different facial features and spatial frequencies to differentiate these facial expressions. Specifically, schizophrenia patients underutilized the eye regions, overutilized the nose and mouth regions, and virtually ignored information presented at the lowest levels of spatial frequency. In addition, a post hoc one-tailed t test revealed a positive relationship of moderate strength between the degree of divergence from "normal" visual facial information usage in the eye region and lower overall social functioning. These findings provide direct support for aberrant patterns of visual facial information usage in schizophrenia in differentiating between socially salient emotional states.
authors.affiliation: Department of Psychology, University of Calgary, Calgary, Alberta, Canada. clarkcm@ucalgary.ca
authors.forename: Cameron M
authors.initials: CM
authors.lastname: Clark
authors.forename: Frédéric
authors.initials: F
authors.lastname: Gosselin
authors.forename: Vina M
authors.initials: VM
authors.lastname: Goghari
mesh_terms: D000328:Adult; D016022:Case-Control Studies; D004192:Discrimination, Psychological; D004644:Emotions; D005149:Facial Expression; D005260:Female; D006801:Humans; D008297:Male; D010775:Photic Stimulation / Q000379:methods; D021641:Recognition, Psychology; D012559:Schizophrenia / Q000503:physiopathology*; D012565:Schizophrenic Psychology; D014796:Visual Perception / Q000502:physiology*