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However, whether repeated use of psychedelics is associated with more prolonged and permanent modifications to the concept of self remains to be investigated. Therefore, we conducted a preregistered, cross\u2010sectional study in which experienced psychedelics users (15 or more lifetime experiences with psychedelics; <jats:italic>N<\/jats:italic>\u2009=\u200956) were compared to nonusers (<jats:italic>N<\/jats:italic>\u2009=\u200957) in terms of neural reactivity to a Self\u2010name (i.e., each participant's own name) stimulus, which is known to robustly activate a representation of <jats:italic>self.<\/jats:italic> Two control stimuli were additionally used: an Other\u2010name stimulus, as a passive control condition in which no reaction was required, and a Target\u2010name stimulus, to which participants provided a manual response and which thus constituted an active control condition. Analysis of the amplitude of the P300 ERP component evoked by the Self\u2010 or Target\u2010names revealed no difference between the psychedelics users and nonusers. However, psychedelic users exhibited increased P300 amplitude during perception of Other\u2010names. In addition, in comparison to nonusers, psychedelics users exhibited a smaller increase in P300 amplitude when processing the task\u2010relevant Target\u2010names (in relation to both Self\u2010 and Other\u2010names). Therefore, our data suggests that regular naturalistic use of psychedelics may not be related to long\u2010term changes in the representation of <jats:italic>self<\/jats:italic>, but it might potentially affect the allocation of attentional resources to task\u2010relevant stimuli.<\/jats:p>","DOI":"10.1111\/psyp.14583","type":"journal-article","created":{"date-parts":[[2024,4,8]],"date-time":"2024-04-08T03:39:51Z","timestamp":1712547591000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Naturalistic use of psychedelics does not modulate processing of self\u2010related stimuli (but it might modulate attentional mechanisms): An event\u2010related potentials study"],"prefix":"10.1111","volume":"61","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1308-7478","authenticated-orcid":false,"given":"Pawe\u0142","family":"Or\u0142owski","sequence":"first","affiliation":[{"name":"Centre for Brain Research Jagiellonian 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