Sensorimotor Induction of Auditory Misattribution in Early Psychosis

Détails

Demande d'une copie
ID Serval
serval:BIB_CC51E471CFA8
Type
Thèse: thèse de doctorat.
Collection
Publications
Institution
Titre
Sensorimotor Induction of Auditory Misattribution in Early Psychosis
Auteur(s)
Progin Pierre
Directeur(s)
Do Kim Q.
Codirecteur(s)
Blanke Olaf
Détails de l'institution
Université de Lausanne, Faculté de biologie et médecine
ISSN
0586-7614
1745-1701
Statut éditorial
Acceptée
Date de publication
08/07/2020
Langue
anglais
Résumé
Dysfunction of sensorimotor predictive processing is thought to underlie abnormalities in self-monitoring producing passivity symptoms in psychosis. Experimentally induced sensorimotor conflict can produce a failure in bodily self-monitoring (presence hallucination [PH]), yet it is unclear how this is related to auditory self-monitoring and psychosis symptoms. Here we show that the induction of sensorimotor conflict in early psychosis patients induces PH and impacts auditory-verbal self-monitoring. Participants manipulated a haptic robotic system inducing a bodily sensorimotor conflict. In experiment 1, the PH was measured. In experiment 2, an auditory-verbal self-monitoring task was performed during the conflict. Fifty-one participants (31 early psychosis patients, 20 matched controls) participated in the experiments. The PH was present in all participants. Psychosis patients with passivity experiences (PE+) had reduced accuracy in auditory-verbal self-other discrimination during sensorimotor stimulation, but only when sensorimotor stimulation involved a spatiotemporal conflict (F(2, 44) = 6.68, P = .002). These results show a strong link between robotically controlled alterations in sensorimotor processing and auditory misattribution in psychosis and provide evidence for the role of sensorimotor processes in altered self-monitoring in psychosis.
Création de la notice
29/09/2020 18:13
Dernière modification de la notice
04/03/2021 7:26
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