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Hessel Engelbregt

5 papers in the library · 35 citations · publishing 2022-2025

Papers

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DMT-induced shifts in criticality correlate with self-dissolution.

The Journal of neuroscience : the official journal of the Society for Neuroscience November 24, 2025 Mona Irrmischer, Marco Aqil, Lisa Luan et al.

Psychedelics profoundly alter subjective experience and brain dynamics. Brain oscillations express signatures of near-critical dynamics, relevant for healthy function. Alterations in the proximity to criticality have been suggested to underlie the experiential and neurological effects of psychedelics. Here, we investigate the effects of a psychedelic substance (DMT) on the criticality of brain...

DMT-induced shifts in criticality correlate with ego-dissolution

bioRxiv February 8, 2025 Mona Irrmischer, Marco Aqil, Lisa Luan et al. 4 citations preprint

ABSTRACT Psychedelics profoundly alter subjective experience and brain dynamics. Brain oscillations express signatures of near-critical dynamics, relevant for healthy function. Alterations in the proximity to criticality have been suggested to underlie the experiential and neurological effects of psychedelics. Here, we investigate the effects of a psychedelic substance (DMT) on the criticality...

Moderating factors in psilocybin-assisted treatment affecting mood and personality: A naturalistic, open-label investigation

Psychopharmacology January 7, 2025 Mona Irrmischer, Drew J. Puxty, Hessel Engelbregt et al. 4 citations

Abstract Rationale Psychedelic-assisted therapy is increasingly applied within mental health treatment. Objectives This study focused on factors moderating changes in the acute and long-term effects of an individual psilocybin-assisted program on depression, anxiety, PTSD and personality structures by including demographic factors, subjective experience and degree of mystical type experiences...

Effects of conscious connected breathing on cortical brain activity, mood and state of consciousness in healthy adults

Current Psychology September 8, 2023 Camile Bahi, Mona Irrmischer, Katrien Franken et al. 27 citations

Abstract Breathwork as a means of inducing non-ordinary states of consciousness is gaining traction as a potential therapeutic modality. We examined the effects of breathwork (in the form of connected breathing) on electroencephalography (EEG) and mood in 20 healthy participants (aged between 23 and 39 years (female = 11, M age = 29). In addition, to compare with other means of inducing...

Brain Activity During Paired and Individual Mindfulness Meditation: A Controlled EEG Study

The International Journal of Transpersonal Studies August 5, 2022 Hessel Engelbregt, Hugo F. Alderse Bass, Sietske De Grauw et al.

Objective: In this study, we evaluated brain electroencephalographic (EEG) activity in healthy participants during the performance of paired and individual mindfulness meditation (MM). We hypothesized that EEG activity is differentially affected by meditation in pairs compared to individual meditation. Methods: A total of 20 healthy female university students (mean age 19.54 years, SD =1.53)...