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Martin Kuchar

Forensic Laboratory of Biologically Active Substances, Department of Chemistry of Natural Compounds, University of Chemistry and Technology, Prague 166 28, Czech Republic.

2 papers in the library · 25 citations · publishing 2024-2025

Papers

Exploring 5-MeO-DMT as a pharmacological model for deconstructed consciousness.

Neuroscience of consciousness January 1, 2025 Christopher Timmermann, James W Sanders, David Reydellet et al. 19 citations

The psychedelic 5-MeO-DMT can, in its most extreme cases, produce a complete absence of self-experience and other perceptual content while preserving a quality of aroused, waking awareness. In an exploratory observational study in naturalistic ceremonial settings, micro-phenomenological interviews, questionnaires, and EEG recordings revealed a dynamic progression of effects, including variable disruptions of bodily and narrative self, reduced phenomenal distinctions, and visual imagery. EEG showed global alpha and posterior beta power reductions, suggesting inhibition of top-down brain models. The findings indicate 5-MeO-DMT's potential as a pharmacological model for deconstructed consciousness, though retrospective questionnaires have limitations.

Prefrontal electrophysiological biomarkers and mechanism-based drug effects in a rat model of alcohol addiction.

Translational psychiatry December 5, 2024 Bettina Habelt, Dzmitry Afanasenkau, Cindy Schwarz et al. 6 citations

Alcohol use disorder (AUD) impairs prefrontal control mechanisms, leading to reduced inhibitory control and increased relapse risk. Using a biocompatible neuroprosthesis in a rat model of alcohol addiction, researchers measured neural oscillations and event-related potentials during abstinence. Alcohol-dependent rats showed reduced amplitudes of P1N1 and N1P2 components and attenuated event-related oscillatory activity, along with a dominance in higher beta frequencies indicating hyperarousal prone to relapse. Treatment with psilocybin or LY379268 restored these electrophysiological impairments, with psilocybin particularly counteracting the hyperarousal state. These prefrontal markers may serve as indicators of relapse vulnerability and treatment response, especially for psychedelic drugs.