Naturalistic use of psychedelics does not modulate processing of self‐related stimuli (but it might modulate attentional mechanisms): An event‐related potentials study

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cris.lastimport.scopus2025-08-26T03:13:48Z
dc.abstract.enClassic psychedelics are able to profoundly alter the state of consciousness and lead to acute experiences of ego dissolution – the blurring of the distinction between representations of self and the external world. 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-sectional study in which experienced psychedelics users (15 or more lifetime experiences with psychedelics; N = 56) were compared to nonusers (N = 57) in terms of neural reactivity to a Self-name (i.e., each participant's own name) stimulus, which is known to robustly activate a representation of self. Two control stimuli were additionally used: an Other-name stimulus, as a passive control condition in which no reaction was required, and a Target-name 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- or Target-names revealed no difference between the psychedelics users and nonusers. However, psychedelic users exhibited increased P300 amplitude during perception of Other-names. In addition, in comparison to nonusers, psychedelics users exhibited a smaller increase in P300 amplitude when processing the task-relevant Target-names (in relation to both Self- and Other-names). Therefore, our data suggests that regular naturalistic use of psychedelics may not be related to long-term changes in the representation of self, but it might potentially affect the allocation of attentional resources to task-relevant stimuli.
dc.affiliationInstytut Psychologii
dc.contributor.authorOrłowski, Paweł
dc.contributor.authorHobot, Justyna
dc.contributor.authorRuban, Anastasia
dc.contributor.authorSzczypiński, Jan
dc.contributor.authorBola, Michał
dc.date.access2024-04-07
dc.date.accessioned2024-05-17T10:37:35Z
dc.date.available2024-05-17T10:37:35Z
dc.date.created2024-03-26
dc.date.issued2024-04-07
dc.description.abstract<jats:title>Abstract</jats:title><jats:p>Classic psychedelics are able to profoundly alter the state of consciousness and lead to acute experiences of ego dissolution – the blurring of the distinction between representations of self and the external world. 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‐sectional study in which experienced psychedelics users (15 or more lifetime experiences with psychedelics; <jats:italic>N</jats:italic> = 56) were compared to nonusers (<jats:italic>N</jats:italic> = 57) in terms of neural reactivity to a Self‐name (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‐name stimulus, as a passive control condition in which no reaction was required, and a Target‐name 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‐ or Target‐names revealed no difference between the psychedelics users and nonusers. However, psychedelic users exhibited increased P300 amplitude during perception of Other‐names. In addition, in comparison to nonusers, psychedelics users exhibited a smaller increase in P300 amplitude when processing the task‐relevant Target‐names (in relation to both Self‐ and Other‐names). Therefore, our data suggests that regular naturalistic use of psychedelics may not be related to long‐term changes in the representation of <jats:italic>self</jats:italic>, but it might potentially affect the allocation of attentional resources to task‐relevant stimuli.</jats:p>
dc.description.accesstimeat_publication
dc.description.grantnumber2020/36/T/HS6/00092
dc.description.grantnumber2020/39/O/HS6/01545
dc.description.granttitleNeuronalne mechanizmy kontroli zachowania i teorii umysłu u mężczyzn ze skłonnościami pedofilnymi
dc.description.granttitleSamoświadomość i przetwarzanie emocji w grupie użytkowników klasycznych psychodelików
dc.description.versionfinal_published
dc.identifier.doi10.1111/psyp.14583
dc.identifier.eissn1469-8986
dc.identifier.issn0048-5772
dc.identifier.urihttps://share.swps.edu.pl/handle/swps/673
dc.identifier.weblinkhttps://onlinelibrary.wiley.com/doi/10.1111/psyp.14583?af=R
dc.languageen
dc.pbn.affiliationpsychologia
dc.rightsClosedAccess
dc.rights.explanationdostęp zamknięty
dc.rights.questionNo_rights
dc.share.articleOTHER
dc.subject.enelectroencephalography (EEG)
dc.subject.ennaturalistic use of psychedelics
dc.subject.enP300
dc.subject.enpsychedelics
dc.subject.enself- perception
dc.swps.sciencecloudnosend
dc.titleNaturalistic use of psychedelics does not modulate processing of self‐related stimuli (but it might modulate attentional mechanisms): An event‐related potentials study
dc.title.journalPsychophysiology
dc.typeJournalArticle
dspace.entity.typeArticle