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Doctoral thesis
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The perception of emotional facial expressions in normals and in schizophrenic patients

ContributorsCasati, Paola
Defense date2010-04-23
Abstract

The research compares the perception of facial expressions (FE) of emotions in controls and schizophrenic patients. Three studies are presented. The first and the second study use a new morphing technique to test whether Categorical Perception (CP) exists for static displays of FE. The joint analysis of an identification (first study) and a discrimination task using morphing transitions between Neuter-Happiness and Neuter-Anger expressions demonstrate the presence of CP only for Anger in controls. CP does not occur in first-episode schizophrenia patients. The third study tests the identification of the six basic emotions in dynamic conditions. The results of a recognition task of FE from video clips showing the transformation between a neutral face and an emotional face demonstrates that schizophrenia patients need more time and a more intense facial activity than controls to detect basic emotions. It also shows that patients show selective impairments in the identification of Fear and Disgust.

eng
Keywords
  • Emotions
  • Facial expressions
  • Schizophrenia
Citation (ISO format)
CASATI, Paola. The perception of emotional facial expressions in normals and in schizophrenic patients. 2010. doi: 10.13097/archive-ouverte/unige:9620
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Creation07/13/2010 1:14:00 PM
First validation07/13/2010 1:14:00 PM
Update time03/14/2023 3:55:10 PM
Status update03/14/2023 3:55:09 PM
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