Self-consciousness impairments in schizophrenia with and without first rank symptoms using the moving rubber hand illusion |
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| Institution: | 1. Department of Psychology, University of Essex, Wivenhoe Park, UK;2. Institute of Psychology, Centre for Cognitive Science, TU-Darmstadt, Germany;3. Department of Philosophy and Communication Studies FILCOM, Bologna, Italy;4. Department of Neuroscience, University of Padua, Italy;5. Department of Psychological, Health and Territorial Sciences, “G. d''Annunzio” University of Chieti-Pescara, Chieti, Italy;6. Institute for Advanced Biomedical Technologies, ITAB, “G. d''Annunzio” University of Chieti-Pescara, Chieti, Italy;7. Department of Neuroscience, Imaging and Clinical Sciences, University of Chieti-Pescara, Chieti, Italy |
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| Abstract: | IntroductionThe moving rubber hand illusion allows the evaluation both the sense of body ownership and agency using visuo-motor stimulations.MethodsWe used the moving rubber hand illusion in anatomic congruence with explicit measures to compare active asynchronous and passive synchronous movements in patients diagnosed with schizophrenia with first rank symptoms (FRS) (n = 31) versus without FRS (n = 25).ResultsPatients with FRS are characterized by a lack of agency in active asynchronous condition. The two groups had no sense of ownership in synchronous passive condition. Using a multivariate regression model, we found an association between agency and body ownership measures in the active asynchronous condition in two groups (OR: 1.825, p < 0.001). In the passive condition, this association was only present in the group with first rank symptoms (OR: 2.04, p < 0.001).ConclusionTemporal proximity and sensorimotor information are essential in the understanding of self-consciousness disorders in schizophrenia. |
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| Keywords: | Schizophrenia First Rank Symptoms Rubber Hand Illusion Sense of Agency Ownership Self-consciousness |
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