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Body transfer illusions in the schizophrenia spectrum: a systematic review

Schizophrenia has been viewed as a disorder of the self. Accordingly, the question arises if and how senses of ownership and agency are impaired in schizophrenia. To address this question, several body transfer illusions (BTIs) have been investigated in schizophrenia patients and other schizophrenia...

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Autores principales: Baum, Kira, Hackmann, Julia, Pakos, Julian, Kannen, Kyra, Wiebe, Annika, Selaskowski, Benjamin, Pensel, Max C., Ettinger, Ulrich, Philipsen, Alexandra, Braun, Niclas
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9691625/
https://www.ncbi.nlm.nih.gov/pubmed/36424451
http://dx.doi.org/10.1038/s41537-022-00314-z
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author Baum, Kira
Hackmann, Julia
Pakos, Julian
Kannen, Kyra
Wiebe, Annika
Selaskowski, Benjamin
Pensel, Max C.
Ettinger, Ulrich
Philipsen, Alexandra
Braun, Niclas
author_facet Baum, Kira
Hackmann, Julia
Pakos, Julian
Kannen, Kyra
Wiebe, Annika
Selaskowski, Benjamin
Pensel, Max C.
Ettinger, Ulrich
Philipsen, Alexandra
Braun, Niclas
author_sort Baum, Kira
collection PubMed
description Schizophrenia has been viewed as a disorder of the self. Accordingly, the question arises if and how senses of ownership and agency are impaired in schizophrenia. To address this question, several body transfer illusions (BTIs) have been investigated in schizophrenia patients and other schizophrenia spectrum (SCZ-S) populations. The objective of the study was to systematically review the current evidence from BTIs in the SCZ-S. A systematic literature search in PubMed and CENTRAL (search date: February 12, 2022) was conducted on BTI studies carried out in SCZ-S populations. Studies were included if they were published in English after peer review, reported original research data, related to the SCZ-S, and used a BTI as its study method. Conference papers, study protocols, and reviews were excluded. For each included BTI study, various study characteristics and outcomes were retrieved, and a risk-of-bias score was calculated based on six study quality criteria. K = 40 studies were identified, of which k = 20 studies met the eligibility criteria. For BTI paradigms using visuotactile stimulation, most studies found elevated sense of ownership ratings in SCZ-S populations compared to healthy controls (HC). Implicit illusion measures (e.g., proprioceptive drift), in turn, did not generally indicate elevated embodiment levels in SCZ-S populations. Likewise, no consistent group differences emerged between SCZ-S populations and HC with respect to BTI paradigms using visuomotor stimulation. Furthermore, BTI vividness was found to correlate significantly with core symptoms of schizophrenia and various subclinical characteristics related to the SCZ-S. In line with the self-disturbance hypothesis, SCZ-S populations appear to be affected by aberrations in bodily self-awareness. Review registration: PROSPERO (identifier: CRD42022287960).
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spelling pubmed-96916252022-11-26 Body transfer illusions in the schizophrenia spectrum: a systematic review Baum, Kira Hackmann, Julia Pakos, Julian Kannen, Kyra Wiebe, Annika Selaskowski, Benjamin Pensel, Max C. Ettinger, Ulrich Philipsen, Alexandra Braun, Niclas Schizophrenia (Heidelb) Review Article Schizophrenia has been viewed as a disorder of the self. Accordingly, the question arises if and how senses of ownership and agency are impaired in schizophrenia. To address this question, several body transfer illusions (BTIs) have been investigated in schizophrenia patients and other schizophrenia spectrum (SCZ-S) populations. The objective of the study was to systematically review the current evidence from BTIs in the SCZ-S. A systematic literature search in PubMed and CENTRAL (search date: February 12, 2022) was conducted on BTI studies carried out in SCZ-S populations. Studies were included if they were published in English after peer review, reported original research data, related to the SCZ-S, and used a BTI as its study method. Conference papers, study protocols, and reviews were excluded. For each included BTI study, various study characteristics and outcomes were retrieved, and a risk-of-bias score was calculated based on six study quality criteria. K = 40 studies were identified, of which k = 20 studies met the eligibility criteria. For BTI paradigms using visuotactile stimulation, most studies found elevated sense of ownership ratings in SCZ-S populations compared to healthy controls (HC). Implicit illusion measures (e.g., proprioceptive drift), in turn, did not generally indicate elevated embodiment levels in SCZ-S populations. Likewise, no consistent group differences emerged between SCZ-S populations and HC with respect to BTI paradigms using visuomotor stimulation. Furthermore, BTI vividness was found to correlate significantly with core symptoms of schizophrenia and various subclinical characteristics related to the SCZ-S. In line with the self-disturbance hypothesis, SCZ-S populations appear to be affected by aberrations in bodily self-awareness. Review registration: PROSPERO (identifier: CRD42022287960). Nature Publishing Group UK 2022-11-23 /pmc/articles/PMC9691625/ /pubmed/36424451 http://dx.doi.org/10.1038/s41537-022-00314-z Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Review Article
Baum, Kira
Hackmann, Julia
Pakos, Julian
Kannen, Kyra
Wiebe, Annika
Selaskowski, Benjamin
Pensel, Max C.
Ettinger, Ulrich
Philipsen, Alexandra
Braun, Niclas
Body transfer illusions in the schizophrenia spectrum: a systematic review
title Body transfer illusions in the schizophrenia spectrum: a systematic review
title_full Body transfer illusions in the schizophrenia spectrum: a systematic review
title_fullStr Body transfer illusions in the schizophrenia spectrum: a systematic review
title_full_unstemmed Body transfer illusions in the schizophrenia spectrum: a systematic review
title_short Body transfer illusions in the schizophrenia spectrum: a systematic review
title_sort body transfer illusions in the schizophrenia spectrum: a systematic review
topic Review Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9691625/
https://www.ncbi.nlm.nih.gov/pubmed/36424451
http://dx.doi.org/10.1038/s41537-022-00314-z
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