ABSTRACT The present study examined the relationship between naturalistic psychedelic use and two distinct forms of grandiose narcissism: admiration and rivalry . Using data from an online survey, we compared psychedelic users ( N = 630), non‐users ( N = 100) and individuals planning to use psychedelics in the future ( N = 141) on levels of admiration and rivalry. Additionally, we explored how...
Abstract Background Contemporary research indicates that psychedelics induce notable neurophysiological changes, some lasting weeks to months after a single dose. However, most evidence derives from acute administration studies and limited post-acute follow-ups. Long-term naturalistic psychedelic users remain critically underexamined, yet may exhibit distinct neurobiological profiles informing...
Classic psychedelics profoundly alter emotional states, inducing intense acute experiences lasting hours, followed by subtler, longer-lasting changes in emotional reactivity that can persist for weeks. While experimental and clinical studies document these prolonged effects, the highly context-dependent nature of psychedelic experiences leaves open the question of whether naturalistic,...
February 26, 2025Stanisław Adamczyk, Małgorzata Paczyńska, Anastasia Ruban et al.1 citation
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Psychedelic substances have the potential to induce profound alterations in cognition, emotionality, and sensory perception. The quality and intensity of these subjective effects exhibit high intra- and inter-individual variability, which can potentially be accounted for by the variability in contexts in which psychedelics are used. Therefore, the aim of the present cross-sectional study was to...
Psychedelics have the potential to induce profound alterations in cognition, emotionality, and sensory perception. The quality and intensity of these subjective effects exhibit high intra- and inter-individual variability, which can potentially be accounted for by the variability in contexts in which psychedelics are used. Therefore, the aim of the present cross-sectional study was to...
Psychedelics have gained increasing interest in scientific research due to their ability to induce profound alterations in perception, emotional processing and self-consciousness. However, the research regarding the functioning of individuals who use psychedelics in naturalistic contexts remains limited. Here we aim to explore psychological and neurophysiological differences between...
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...
Psychedelics have gained increasing interest in scientific research due to their ability to induce profound alterations in perception, emotional processing and self-consciousness. However, the research regarding the short- and long-term impact of using psychedelics in non-controlled, naturalistic contexts remains limited. Here we aim to fill this gap and explore differences between naturalistic...
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...
Previous research indicates that psychedelic substances taken in well-controlled laboratory or therapeutic settings have the potential to decrease negative and increase positive emotional reactivity. However, it is unclear whether similar effects are associated with using psychedelics in less-controlled naturalistic environments. Therefore, in the present study we compared neural markers of...
Diversity of brain activity is a robust neural correlate of global states of consciousness. It has been proposed that diversity measures specifically reflect the temporal variability of conscious experience. Previous studies supported this hypothesis by showing that perception of meaningful visual stimuli causes richer, more-variable experiences than perception of meaningless stimuli, and this...
Background: Psychedelics are able to acutely alter emotional reactivity and self-consciousness. However, whether the regular naturalistic use of psychedelics can be linked to more persistent trait-level changes in these domains remains an open question. Aim: To test the hypotheses that (1) using psychedelics is related to higher positive and lower negative emotional reactivity; and (2) an...
Background: Psychedelics are able to acutely alter emotional reactivity and self-consciousness. However, whether regular, naturalistic use of psychedelics can be linked to more persistent, trait-level changes in these domains remains an open question.Aim: To test three hypotheses: i) psychedelics use is related to higher positive and lower negative emotional reactivity; ii) psychedelics use is...
Abstract Transitions between wakefulness and anesthesia are accompanied by profound changes in brain functioning. A key challenge is thus to disentangle neuronal mechanisms specific to loss and recovery of consciousness, from more general effects that are not directly related to the capacity for conscious experience. Measures of neuronal diversity have been recently proposed to constitute a...
Brain signal diversity constitutes a robust neuronal marker of the global states of consciousness. It has been demonstrated that, in comparison to the resting wakefulness, signal diversity is lower during unconscious states, and higher during psychedelic states. A plausible interpretation of these findings is that the neuronal diversity corresponds to the diversity of subjective conscious...