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Ketamine: all studies

Page 449 of 449: studies 4,481 to 4,486 of 4,486, newest first. Back to the ketamine overview

Research

Psychopathological descriptive model of hallucinogenic/psychedelic drugs effect in the treatment of depression and addictions

Nestor Girala

Introduction There is a growing and renewed interest in the use of hallucinogenic drugs in the treatment of psychiatric disorders, especially since the FDA approval of esketamine treatment for resistant depression. The response to hallucinogenic psychedelic substances (ayahuasca, psilocybin, LSD, ketamine) in the treatment of depression and addictions calls for a theoretical explanatory model....

Binaries, Multitudes, and Beyond: A Client-Authored Case Study in Psychedelic-Assisted Therapy, Artificial Intelligence, and Narrative Agency

Mark A. Michaels preprint

This client-authored, autoethnographic case study documents a 10-week course of collaborative therapy integrating EMDR, ketamine, MDMA, psilocybin, creative expression, and AI-assisted reflection and writing. Drawing on affect theory, mentalization, earned secure attachment, and Dabrowski's theory of positive disintegration, the paper analyzes how recognition of core affects, rupture-and-repair...

Putative rapid-acting antidepressant nitrous oxide (“laughing gas”) evokes rebound emergence of slow EEG oscillations during which TrkB signaling is induced

Samuel Kohtala, Wiebke Theilmann, Marko Rosenholm et al. preprint

Abstract Electroconvulsive therapy (ECT) remains among the most efficient antidepressants but it seldom brings immediate remedy. However, a subanesthetic dose of NMDA-R (N-methyl-D-aspartate receptor) blocker ketamine ameliorates symptoms of depression already within hours. Glutamatergic excitability and regulation of TrkB neurotrophin receptor and GSK3β (glycogen synthase kinase 3β) signaling...

Nitrous oxide modulates cortical activity, wake–sleep oscillations, and produces antidepressant-like effects in mice

Samuel Kohtala, Puja K Parekh, Iman Baramaki et al. preprint

Summary Emerging evidence suggests that nitrous oxide (N 2 O), a gaseous NMDA receptor antagonist and dissociative anesthetic, exerts rapid antidepressant effects akin to subanesthetic ketamine. However, its cellular, molecular, and behavioral effects remain poorly understood. Using in vivo two-photon imaging through cortical microprisms, we demonstrate that 50% N 2 O/O 2 rapidly increases...

Too big to fail? Comparing effect sizes of MDMA assisted therapy to unmasking bias

Balázs Szigeti, Ellen Bradley, Joshua Woolley preprint

On August 9th the US Food and Drug Administration’s (FDA) rejected 3,4-methylenedioxymethamphetamine assisted therapy (MDMA-AT) as a treatment for post-traumatic stress disorder (PTSD), despite seemingly positive trial results. A major reason cited was functional unmasking, which combined with enthusiasm about MDMA, raised concerns about the objectivity of these trials. Here, we define what is...

Unmasking bias and MDMA-assisted therapy

Balázs Szigeti 1 citation preprint

On August 9th the US Food and Drug Administration’s (FDA) rejected 3,4-methylenedioxymethamphetamine assisted therapy (MDMA-AT) as a treatment for post-traumatic stress disorder (PTSD) despite seemingly positive trial results. A major reason cited was functional unmasking, which combined with enthusiasm about MDMA, raised concerns about the objectivity of these trials. Here, we define what is...