{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,3]],"date-time":"2026-10-03T03:55:34Z","timestamp":1790999734468,"version":"4.1.0"},"reference-count":137,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2024,11,13]],"date-time":"2024-11-13T00:00:00Z","timestamp":1731456000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Psychiatry"],"abstract":"<jats:sec><jats:title>Background<\/jats:title><jats:p>Self-disorders constitute a core feature of the schizophrenia spectrum, including early stages such as first-episode psychosis (FEP). These disorders impact the minimal Self, or bodily self-consciousness, which refers to the basic, pre-reflective sense of embodied experience. The minimal Self is intrinsically linked to episodic memory, which captures specific past experiences of the Self. However, research on this relationship in the schizophrenia spectrum remains scarce. This pilot study aimed to investigate how the minimal Self modulated episodic memory of naturalistic events in FEP, using immersive virtual reality. A secondary objective was to examine the relationships between sense of Self, embodiment, episodic memory, schizotypal personality traits in healthy participants (CTL), and psychopathology in FEP.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A full-body illusion was induced in 10 FEP and 35 matched CTL, using a first-person avatar, with synchronous or asynchronous visuomotor stimulation (strong or weak embodiment conditions, respectively). Following embodiment induction, participants navigated a virtual city and encountered naturalistic daily life events, which were incidentally encoded. Episodic memory of these events was assessed through a comprehensive recognition task (factual and contextual information, retrieval phenomenology). Sense of Self, schizotypal personality traits, and psychopathology were assessed via self-reported questionnaires or clinical assessments.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>Synchronous visuomotor stimulation successfully induced a stronger sense of embodiment in both FEP and CTL. The strong embodiment condition was associated with reduced perceived virtual space occupation by the body in FEP. Under strong embodiment, FEP performed significantly worse than CTL in contextual information recognition, but their ratings for retrieval phenomenology were comparable to CTL. Conversely, under weak embodiment, FEP performed similarly to CTL in contextual information recognition, but they rated retrieval phenomenology significantly lower. For CTL, we observed a slight, though non-significant, enhancement in recognition memory under strong compared to weak embodiment. Additionally, higher schizotypy in CTL correlated with a diminished sense of Self and poorer episodic memory.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Disturbances in the minimal Self in FEP are associated with episodic memory impairments. These findings emphasise the importance of targeting minimal Self-disorders in schizophrenia spectrum disorders, since episodic memory impairments may negatively affect patients\u2019 quality of life and psychosocial outcomes. Additionally, they support a fully dimensional model of schizotypy.<\/jats:p><\/jats:sec>","DOI":"10.3389\/fpsyt.2024.1469390","type":"journal-article","created":{"date-parts":[[2024,11,13]],"date-time":"2024-11-13T05:03:33Z","timestamp":1731474213000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":7,"title":["Impact of minimal self disorders on naturalistic episodic memory in first-episode psychosis and parallels in healthy individuals with schizotypal traits"],"prefix":"10.3389","volume":"15","author":[{"given":"Delphine","family":"Yeh","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Sylvain","family":"Penaud","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Alexandre","family":"Gaston-Bellegarde","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Linda","family":"Scoriels","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Marie-Odile","family":"Krebs","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pascale","family":"Piolino","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2024,11,13]]},"reference":[{"key":"B1","doi-asserted-by":"publisher","DOI":"10.1037\/a0030146","article-title":"Autobiographical memory and sense of self","volume":"139","author":"Prebble","year":"2013","journal-title":"psychol Bull"},{"key":"B2","doi-asserted-by":"publisher","first-page":"14","DOI":"10.1016\/S1364-6613(99)01417-5","article-title":"Philosophical conceptions of the self: implications for cognitive science","volume":"4","author":"Gallagher","year":"2000","journal-title":"Trends Cogn Sci"},{"key":"B3","doi-asserted-by":"publisher","DOI":"10.1016\/j.tics.2011.01.001","article-title":"Specifying the self for cognitive neuroscience","volume":"15","author":"Christoff","year":"2011","journal-title":"Trends Cogn Sci"},{"key":"B4","doi-asserted-by":"publisher","first-page":"77","DOI":"10.1016\/j.neubiorev.2020.05.004","article-title":"Linking bodily, environmental and mental states in the self\u2014a three-level model based on a meta-analysis","volume":"115","author":"Qin","year":"2020","journal-title":"Neurosci Biobehav Rev"},{"key":"B5","doi-asserted-by":"publisher","DOI":"10.1016\/j.tins.2017.09.002","article-title":"Self as object: emerging trends in self research","volume":"40","author":"Sui","year":"2017","journal-title":"Trends Neurosci"},{"key":"B6","doi-asserted-by":"crossref","first-page":"697","DOI":"10.1037\/10538-000","volume-title":"The Principles of Psychology, Vol I","author":"James","year":"1890"},{"key":"B7","doi-asserted-by":"publisher","DOI":"10.1159\/000363351","article-title":"How is our self altered in psychiatric disorders? 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