Trial reportNeuropsychopharmacology : official publication of the American College of Neuropsychopharmacology2017
Single-Dose Memantine Improves Cortical Oscillatory Response Dynamics in Patients with Schizophrenia.
Trial report in Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 49 papers, 1 of them a synthesis that pooled it.
What it found
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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
49 citing papers in PubMed, 1 synthesis or guideline pooled it.
- Glutamatergic Modulation of Brain Function in Psychosis: A Systematic Review of Neuroimaging Studies.Biological psychiatry. Cognitive neuroscience and neuroimaging · 2025Pooled it
- Pharmacologic Augmentation of Computerized Auditory Training in Chronic Psychosis: Preliminary Findings From a Single-Site, Double-Blind Study.Schizophrenia bulletin · 2025Trial
- A causal role of the NMDA receptor in recurrent processing during perceptual integration.eLife · 2025Trial
- Results from a Double-Blind, Randomized, Placebo-Controlled, Single-Dose, Crossover Trial of Lovastatin or Minocycline in Fragile X Syndrome.Journal of child and adolescent psychopharmacology · 2025Trial
- Quantitative electroencephalography parameters as neurophysiological biomarkers of schizophrenia-related deficits: A Phase II substudy of patients treated with iclepertin (BI 425809).Translational psychiatry · 2022Trial
- Memantine effects on auditory discrimination and training in schizophrenia patients.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2020Trial
- Gamma oscillations predict pro-cognitive and clinical response to auditory-based cognitive training in schizophrenia.Translational psychiatry · 2020Trial
- Memantine Effects on Electroencephalographic Measures of Putative Excitatory/Inhibitory Balance in Schizophrenia.Biological psychiatry. Cognitive neuroscience and neuroimaging · 2020Trial
- Neurophysiologic measures of target engagement predict response to auditory-based cognitive training in treatment refractory schizophrenia.Neuropsychopharmacology : official publication of the American College of Neuropsychopharmacology · 2019Trial
- Andrographolide increases adult hippocampal neurogenesis and prolongs contextual fear memory.Psychopharmacology · 2025Article
- The Application of Gamma-Range Auditory Steady-State Responses in Animal Models: A Semi-Structured Literature Review.Brain sciences · 2025Review
- Do cognitive and neurophysiological effects of acute memantine "challenge" predict its clinical benefits in Alzheimer's Disease?Psychiatry research · 2025Article
- Sex differences in the lateralization of sustained electrophysiological response to 40 Hz clicks in typically developing preschoolers.Scientific reports · 2025Article
- The electroencephalography protocol for the Accelerating Medicines Partnership® Schizophrenia Program: Reliability and stability of measures.Schizophrenia (Heidelberg, Germany) · 2025Article
- Auditory steady-state response deficits in Fragile X Syndrome implicate deficits in stimulus representation maintenance and GABAergic modulation.medRxiv : the preprint server for health sciences · 2025Article
- Corticolimbic circuitry as a druggable target in schizophrenia spectrum disorders: a narrative review.Translational psychiatry · 2025Review
- Finding the Right Dose: NMDA Receptor-Modulating Treatments for Cognitive and Plasticity Deficits in Schizophrenia and the Role of Pharmacodynamic Target Engagement.Biological psychiatry · 2025Review
- Dysfunctional Parvalbumin Neurons in Schizophrenia and the Pathway to the Clinical Application of Kv3 Channel Modulators.International journal of molecular sciences · 2024Review
- 40 Hz Steady-State Response in Human Auditory Cortex Is Shaped by Gabaergic Neuronal Inhibition.The Journal of neuroscience : the official journal of the Society for Neuroscience · 2024Article
- Effects of Memantine on the Auditory Steady-State and Harmonic Responses to 40 Hz Stimulation Across Species.Biological psychiatry. Cognitive neuroscience and neuroimaging · 2024Article
Corrections and comments
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Authors and funding
6 authors.
Funding
Abstract
Aberrant gamma-band (30-80 Hz) oscillations may underlie cognitive deficits in schizophrenia (SZ). Gamma oscillations and their regulation by NMDA receptors can be studied via their evoked power (γEP) and phase locking (γPL) in response to auditory steady-state stimulation; these auditory steady-state responses (ASSRs) may be biomarkers for target engagement and early therapeutic effects. We previously reported that memantine, an NMDA receptor antagonist, enhanced two biomarkers of early auditory information processing: prepulse inhibition and mismatch negativity (MMN) in SZ patients and healthy subjects (HS). Here, we describe memantine effects on γEP and γPL in those subjects. SZ patients (n=18) and HS (n=14) received memantine 20 mg (p.o.) and placebo over 2 test days in a double-blind, randomized, counterbalanced, cross-over design. The ASSR paradigm (1 ms, 85 dB clicks in 250-0.5 s trains at a frequency of 40 Hz; 0.5 s inter-train interval) was used to assess γEP and γPL. SZ patients had reduced γEP and γPL; memantine enhanced γEP and γPL (p<0.025 and 0.002, respectively) in both SZ and HS. In patients, significant correlations between age and memantine effects were detected for γEP and γPL: greater memantine sensitivity on γEP and γPL were present in younger SZ patients, similar to our reported findings with MMN. Memantine acutely normalized cortical oscillatory dynamics associated with NMDA receptor dysfunction in SZ patients. Ongoing studies will clarify whether these acute changes predict beneficial clinical, neurocognitive and functional outcomes. These data support the use of gamma-band ASSR as a translational end point in pro-cognitive drug discovery and early-phase clinical trials.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.