1 Summary The relationship between the acute effects of psychedelics and their persisting neurobiological and psychological effects is poorly understood. Here, we tracked brain changes with longitudinal precision functional mapping in healthy adults before, during, and for up to 3 weeks after oral psilocybin and methylphenidate (17 MRI visits per participant) and again 6+ months later....
Despite research advances and urgent calls by national and global health organizations, clinical outcomes for millions of people suffering with chronic pain remain poor. We suggest bringing the lens of complexity science to this problem, conceptualizing chronic pain as an emergent property of a complex biopsychosocial system. We frame pain-related physiology, neuroscience, developmental...
Background: Immediate early genes (IEGs) are rapidly activated and initiate diverse cellular processes including neuroplasticity. We report the effect of psilocybin (PSIL), PSIL-containing psychedelic mushroom extract (PME) and 5-hydroxytryptophan (5-HTP) on expression of the IEGs, cfos, egr1 , and egr2 in mouse somatosensory cortex (SSC). Methods: In our initial experiment, male C57Bl/6j mice...
Zaburzenia depresyjne są jednymi z najczęściej występujących chorób psychicznych na świecie. Leczenie depresji stanowi ważny problem medyczny, a strategie farmakologiczne oparte na wyrównywaniu zaburzeń transmisji monoaminergicznych w mózgu wiążą się z opóźnionym w czasie efektem przeciwdepresyjnym. Ponadto, coraz większy odsetek pacjentów cierpi na depresję lekooporną, gdzie pomimo wdrożenia...
Existing neurocognitive theories have mainly concentrated on the disruptive aspects of psychedelics, such as cognitive disruption, cortical-thalamic filtering disturbances, and disordered/entropic brain states, but they fail to fully account for the emergence of new beneficial behaviors, responses, and insights. This paper proposes a novel framework that shifts the focus from the disruptive...
What are the mechanisms through which psychedelics may exert therapeutic effects in psychiatric disorders? There are two approaches to answering this question: first is the identification of novel pathways. Additionally, it would be of interest to determine the effects of psychedelics on mechanisms that already appear to underlie the neurobiology and therapeutics of psychiatric disorders. This...
The serotonergic transmitter system plays fundamental roles in the nervous system in neurotransmission, synaptic plasticity, pathological processes, and therapeutic effects of antidepressants and psychedelics, as well as in the gastrointestinal and circulatory systems. We introduce a novel small molecule fluorescent agent, termed SERTlight, that specifically labels serotonergic neuronal cell...
Identity—differentiating self from external reality—and agency—being the author of one’s acts—are generally considered intrinsic properties of awareness and looked at as mental constructs generated by consciousness. Here a different view is proposed. All physiological systems display complex time-dependent regulations to adapt or anticipate external changes. To interact with rapid changes, an...
Back to table of contents Previous article Next article Editor's DeskFull AccessPsychedelic Renaissance: Evidence and CultureAdrian Preda, M.D.Adrian Preda, M.D.Published Online:21 Mar 2024https://doi.org/10.1176/appi.pn.2024.04.4.39The ebb and flow of societal beliefs often resemble a pendulum's swing, oscillating between acceptance and rejection. This phenomenon is not confined to the annals...
Abstract Microdosing psychedelics has garnered considerable attention within both nonprofessional circles and the scientific community in recent years. This method involves taking small, non-hallucinogenic doses of substances like LSD or psilocybin over weeks or months, purportedly to enhance specific behaviors, emotions, or address psychiatric conditions. Exploring these assertions is crucial...