Abstract
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 auditoryverbal 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.
Original language | English |
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Pages (from-to) | 947-954 |
Number of pages | 8 |
Journal | Schizophrenia Bulletin |
Volume | 46 |
Issue number | 4 |
DOIs | |
State | Published - 8 Jul 2020 |
Bibliographical note
Publisher Copyright:© The Author(s) 2020.
Funding
This work was supported by Bertarelli Foundation, the Swiss National Science Foundation, and the European Science Foundation grants to O.B. R. S. was supported by the National Center of Competence in Research (NCCR) "SYNAPSY-The Synaptic Bases of Mental Diseases" financed by the Swiss National Science Foundation (grant no. 51AU40-125759) and an Israel Science Foundation (grant No. 1169/17). A.G. was financially supported by Swiss National Science Foundation grant (grant No. 29631).
Funders | Funder number |
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Fondation Bertarelli | |
nccr – on the move | 51AU40-125759 |
European Science Foundation | |
Schweizerischer Nationalfonds zur Förderung der Wissenschaftlichen Forschung | |
Israel Science Foundation | 1169/17, 29631 |
Keywords
- Early psychosis
- Predictive processing
- Sense of agency
- Sensorimotor conflict
- Source monitoring