Trial reportBritish journal of clinical pharmacology2026
Sustained pharmacodynamic effects of S-ketamine on cortical excitability and resting-state brain activity: A randomized, placebo-controlled trial.
Trial report in British journal of clinical pharmacology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
1 citing paper in PubMed.
- Sustained pharmacodynamic effects of S-ketamine on cortical excitability and resting-state brain activity: A randomized, placebo-controlled trial.British journal of clinical pharmacology · 2026Trial
Corrections and comments
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Authors and funding
12 authors.
Funding
Abstract
aimsThis study aimed to investigate a set of pharmacodynamic biomarkers reflecting acute, delayed and sustained central nervous system effects of S-ketamine, used as a tool compound for rapid-acting antidepressant activity, with the goal of informing biomarker strategies for delayed antidepressant effects.
methodsIn this randomized, double-blind, double-dummy, placebo-controlled, 4-way crossover study in 16 healthy participants, we administered S-ketamine in a therapeutic intravenous dose (IV), a low and high oral dose, versus placebo. Measurements were conducted from baseline up to 7 days post-dose using Transcranial Magnetic Stimulation combined with electromyography (TMS-EMG) and encephalography (TMS-EEG), pharmaco-electroencephalography (pEEG), alongside drug and metabolite plasma concentrations. Outcomes were analysed using mixed-effects ANCOVA and cluster-based permutation testing. Post-hoc concentration-effect relationships were explored.
resultsIV S-ketamine induced an acute reduction in motor-evoked potential (MEP) amplitude and sustained attenuation of long-interval intracortical inhibition (LICI
conclusionWe provide evidence suggestive of delayed pharmacodynamic effects of S-ketamine in healthy participants sustained up to 7 days post-dose, using TMS and pEEG derived measures, which are markedly distinct from its acute effects and may be relevant to understand its antidepressant efficacy.
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