title: Biases in facial and vocal emotion recognition in chronic schizophrenia.
abstract: There has been extensive research on impaired emotion recognition in schizophrenia in the facial and vocal modalities. The literature points to biases toward non-relevant emotions for emotional faces but few studies have examined biases in emotional recognition across different modalities (facial and vocal). In order to test emotion recognition biases, we exposed 23 patients with stabilized chronic schizophrenia and 23 healthy controls (HCs) to emotional facial and vocal tasks asking them to rate emotional intensity on visual analog scales. We showed that patients with schizophrenia provided higher intensity ratings on the non-target scales (e.g., surprise scale for fear stimuli) than HCs for the both tasks. Furthermore, with the exception of neutral vocal stimuli, they provided the same intensity ratings on the target scales as the HCs. These findings suggest that patients with chronic schizophrenia have emotional biases when judging emotional stimuli in the visual and vocal modalities. These biases may stem from a basic sensorial deficit, a high-order cognitive dysfunction, or both. The respective roles of prefrontal-subcortical circuitry and the basal ganglia are discussed.
authors.affiliation: EA 4712 'Behavior and Basal Ganglia' Laboratory, Université de Rennes 1 Rennes, France ; Psychiatry Unit, Guillaume Régnier Hospital Rennes, France.
authors.forename: Thibaut
authors.initials: T
authors.lastname: Dondaine
authors.affiliation: EA 4712 'Behavior and Basal Ganglia' Laboratory, Université de Rennes 1 Rennes, France ; Psychiatry Unit, Guillaume Régnier Hospital Rennes, France.
authors.forename: Gabriel
authors.initials: G
authors.lastname: Robert
authors.affiliation: 'Neuroscience of Emotion and Affective Dynamics' Laboratory, Department of Psychology, University of Geneva Switzerland ; Swiss Center for Affective Sciences, University of Geneva Switzerland.
authors.forename: Julie
authors.initials: J
authors.lastname: Péron
authors.affiliation: 'Neuroscience of Emotion and Affective Dynamics' Laboratory, Department of Psychology, University of Geneva Switzerland ; Swiss Center for Affective Sciences, University of Geneva Switzerland.
authors.forename: Didier
authors.initials: D
authors.lastname: Grandjean
authors.affiliation: EA 4712 'Behavior and Basal Ganglia' Laboratory, Université de Rennes 1 Rennes, France ; Neurology Unit, University Hospital of Rennes France.
authors.forename: Marc
authors.initials: M
authors.lastname: Vérin
authors.affiliation: EA 4712 'Behavior and Basal Ganglia' Laboratory, Université de Rennes 1 Rennes, France ; Psychiatry Unit, Guillaume Régnier Hospital Rennes, France.
authors.forename: Dominique
authors.initials: D
authors.lastname: Drapier
authors.affiliation: EA 4712 'Behavior and Basal Ganglia' Laboratory, Université de Rennes 1 Rennes, France ; Psychiatry Unit, Guillaume Régnier Hospital Rennes, France.
authors.forename: Bruno
authors.initials: B
authors.lastname: Millet
keywords: chronic schizophrenia; emotional biases; facial emotion recognition; prosody; vocal emotion recognition