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Ketamine: all studies

Page 352 of 449: studies 3,511 to 3,520 of 4,483, newest first. Back to the ketamine overview

Research

Psychedelics and Psychedelic-Inspired Compounds for Substance Use Disorders: Are We Treating the Disease or Opening a Learning Window?

Brain Sciences October 29, 2026 Adela G. Buciuc, Mark S. Gold, Brian S Fuehrlein

Substance use disorders remain a leading cause of preventable death, and existing care is better described as disease management than as cure. Medications for opioid, alcohol, and tobacco use disorders reduce substance use, and opioid agonist treatment reduces mortality, yet retention is poor and functional recovery is rarely measured. This review asks whether psychedelics treat addiction, or...

Does near-criticality set the level of consciousness? An architectural prediction, and how to falsify it

Zenodo (CERN European Organization for Nuclear Research) October 23, 2026 Matthias Gruber preprint

Proximity to a critical point is increasingly treated as a marker of the conscious brain: cortical dynamics sit closer to criticality in wakefulness than under anaesthesia, in seizures or in disorders of consciousness. Criticality characterises the regime of the substrate, however, and two systems poised at the same statistical edge can differ completely in what they compute. This Viewpoint...

O uso da cetamina como estratégia terapêutica no Transtorno Obsessivo-Compulsivo

Diálogos Interdisciplinares em Psiquiatria e Saúde Mental October 19, 2026 Letícia Macedo Pinto, Lucas Macedo Pinto, Joel Porfírio Pinto

Introduction: Obsessive-Compulsive Disorder (OCD) presents approximately 20% of cases refractory to conventional treatments, driving the investigation of pathophysiological pathways, including the glutamatergic hypothesis. In this context, ketamine emerges as a potential intervention. This study reviewed the literature on ketamine use in OCD, focusing on efficacy, mechanisms, and safety....

Spatiotemporal remodeling in habenula marks the onset of depression-related phenotypes

Nature Neuroscience October 19, 2026 Patricia Molina, Denys Osypenko, Josep Garnica et al.

Abstract Chronic stress has lasting adverse consequences that can lead, over time, to depressive disorders1‑4 yet identifying the optimal timeframe for effective therapies remains an unmet challenge. Enhanced neuronal activity and disrupted aversion-encoding in lateral habenula (LHb) are important mediators of stress-related behavioral repercussions5‑10, although the precise timing of its...

Psychoplastogens to Reduce Persistent Cognitive Symptoms for Traumatic Brain Injury as a Chronic Condition

Journal of Neurotrauma October 19, 2026 Hoda K AbouEich, Ali Izadi, Jonathan Lifshitz et al.

There are currently no available effective pharmacological therapies for treating chronic cognitive deficits after traumatic brain injury (TBI). Psychoplastogens, including atypical psychedelics, classical serotonergic psychedelics, and neuroplastogens, are a class of small molecule drugs that can enhance neuroplasticity by inducing rapid and sustained effects on neuronal architecture and...

AI-assisted characterization of psychedelic clinical trials from ClinicalTrials.gov

Trials October 14, 2026 Luca Pani, Fabio Tascedda

Abstract: Background: The registry record of psychedelic and related rapid-acting compounds is large, heterogeneous and laborious to synthesize by hand. We tested whether a large language model (LLM) with live access to the ClinicalTrials.gov application programming interface (API) could produce a timely, structured and reproducible characterization of this landscape. Methods: Cross-sectional...

Neurite Complexity and Plasticity Markers Track Synaptic Vesicle Density in the Living Human Brain: A Multimodal PET-MRI-EEG Study

bioRxiv (Cold Spring Harbor Laboratory) October 13, 2026 Claudio Agnorelli, Joseph Peill, Danielle Kurtin et al. preprint

Neuroplasticity, the brain's capacity to reorganise its structure and function, is a transdiagnostic feature across psychiatric and neurodegenerative diseases and a putative mechanism of action for pharmacological interventions. [11C]-UCBJ positron emission tomography (PET), which quantifies synaptic vesicle glycoprotein 2A (SV2A) density, offers the most direct in vivo measure of human...

Functional changes in brain activity in altered states of consciousness : An SDM-PSI comparative systematic review and meta-analysis

Cortica October 10, 2026 Ayla Gay

Altered states of consciousness (ASCs) induced by psychological practices (mindfulness meditation, hypnosis, self-induced trance) and pharmacological agents (classical and atypical psychedelics) are increasingly linked to therapeutic change, yet their shared and unique neural signatures remain uncertain. We conducted three preregistered, coordinate-based meta-analyses using SDM-PSI, mindfulness...

Psychedelics in neurosurgery: Potential utility in prevention, perioperative care, pain management, and neurorehabilitation

Surgical Neurology International October 9, 2026 Andrea Garcia-Bitar, Eduardo Jesus Castañeda, José Rafael Buenrostro-Rangel et al.

Background: Neurosurgical patients carry a high and frequently undertreated burden of psychological suffering, acute and chronic pain, and neurological deficits amenable to recovery. The resurgence of psychedelic research has produced relevant evidence in adjacent fields, but its applicability to neurosurgery has not been systematized. This review synthesizes that evidence across prevention,...

Effects of psychedelics on subjective and objective sleep outcomes: A systematic review and exploratory meta-analysis

Therapeutic Advances in Psychopharmacology October 1, 2026 Xin Yang, Shuping Fang, Kejia Hu et al.

Background: Psychedelics, including classic psychedelics, 3,4-methylenedioxymethamphetamine (MDMA), and ketamine, are increasingly investigated for psychiatric disorders, but their effects on sleep remain unclear. Objectives: To systematically evaluate the effects of these interventions on subjective and objective sleep outcomes and summarize sleep-related adverse events. Design: A systematic...