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Body structural representation in schizotypy

Fotia, Francesca ; Van Dam, Loes ; Sykes, John James ; Ambrosini, Ettore ; Costantini, Marcello ; Ferri, Francesca (2024)
Body structural representation in schizotypy.
In: Schizophrenia Research, 2021, 239
doi: 10.26083/tuprints-00027550
Article, Secondary publication, Postprint

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Abstract

A deficient sense of self, typically observed in schizophrenia spectrum disorders, is often accompanied by abnormalities in bodily perception and awareness. These abnormalities are seemingly among the most powerful predictive factors for the onset of schizophrenic illnesses. According to the hypothesis of the psychosis continuum, high schizotypal traits in the general population may be characterized by a progressive sense of detachment from one's lived body. Building upon previous research that found an abnormal Body Structural Representation (BSR) in individuals with schizophrenia, this study aims to extend these findings to schizotypy. To investigate this, we utilized the Finger Localization Task (FLT), in which participants must identify the finger touched by the experimenter, and the In Between Task (IBT), in which two fingers are touched and participants must specify the number of fingers in between the two stimulated fingers. We found that individuals with high schizotypy were significantly less accurate than individuals with low schizotypy in determining the spatial configuration of their own fingers relative to each other. Most significantly, performances on both tasks were negatively correlated with the score on the Dissociative Experiences Scale (DES). These findings support the hypothesis that the progressive loss of one's sense of self is associated with abnormal bodily experiences and dissociative symptomatology which may represent a potential marker for schizophrenia proneness.

Item Type: Article
Erschienen: 2024
Creators: Fotia, Francesca ; Van Dam, Loes ; Sykes, John James ; Ambrosini, Ettore ; Costantini, Marcello ; Ferri, Francesca
Type of entry: Secondary publication
Title: Body structural representation in schizotypy
Language: English
Date: 22 July 2024
Place of Publication: Darmstadt
Year of primary publication: 11 November 2021
Place of primary publication: Amsterdam
Publisher: Elsevier
Journal or Publication Title: Schizophrenia Research
Volume of the journal: 239
Collation: 39 Seiten
DOI: 10.26083/tuprints-00027550
URL / URN: https://tuprints.ulb.tu-darmstadt.de/27550
Corresponding Links:
Origin: Secondary publication service
Abstract:

A deficient sense of self, typically observed in schizophrenia spectrum disorders, is often accompanied by abnormalities in bodily perception and awareness. These abnormalities are seemingly among the most powerful predictive factors for the onset of schizophrenic illnesses. According to the hypothesis of the psychosis continuum, high schizotypal traits in the general population may be characterized by a progressive sense of detachment from one's lived body. Building upon previous research that found an abnormal Body Structural Representation (BSR) in individuals with schizophrenia, this study aims to extend these findings to schizotypy. To investigate this, we utilized the Finger Localization Task (FLT), in which participants must identify the finger touched by the experimenter, and the In Between Task (IBT), in which two fingers are touched and participants must specify the number of fingers in between the two stimulated fingers. We found that individuals with high schizotypy were significantly less accurate than individuals with low schizotypy in determining the spatial configuration of their own fingers relative to each other. Most significantly, performances on both tasks were negatively correlated with the score on the Dissociative Experiences Scale (DES). These findings support the hypothesis that the progressive loss of one's sense of self is associated with abnormal bodily experiences and dissociative symptomatology which may represent a potential marker for schizophrenia proneness.

Uncontrolled Keywords: Schizotypy, Embodiment, Selfhood, Dissociative symptoms
Status: Postprint
URN: urn:nbn:de:tuda-tuprints-275505
Classification DDC: 100 Philosophy and psychology > 150 Psychology
600 Technology, medicine, applied sciences > 610 Medicine and health
Divisions: Zentrale Einrichtungen
Zentrale Einrichtungen > Centre for Cognitive Science (CCS)
Date Deposited: 22 Jul 2024 13:21
Last Modified: 23 Jul 2024 08:41
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