- ICH GCP
- Register voor klinische proeven in de VS.
- Klinische proef NCT07592169
Confirmatory Trial of Gamma Neurofeedback to Improve Working Memory in Schizophrenia
Confirmatory Efficacy Trial to Confirm the Effects of Gamma EEG-Neurofeedback on Working Memory in Schizophrenia
Studie Overzicht
Toestand
Interventie / Behandeling
Gedetailleerde beschrijving
Schizophrenia is associated with deficits in gamma frequency (30-45 Hz) neural synchrony and working memory that are resistant to antipsychotic treatment. EEG neurofeedback (EEG-NFB) targeting frontal gamma coherence is a non-invasive approach that may restore gamma synchrony and improve working memory by reinforcing endogenous neural oscillations in real time.
This confirmatory RCT builds on a successful pilot trial (R33) demonstrating feasibility and preliminary efficacy of gamma EEG-NFB in schizophrenia. Participants (N=104) are randomized 1:1 to active gamma EEG-NFB or sham EEG-NFB. Active EEG-NFB delivers real-time feedback of frontal gamma coherence (F3/F4, 30-50 Hz) via a CGX wireless headset. Sham participants undergo identical procedures but receive pre-recorded feedback unrelated to their own brain activity. Both groups complete 30 sessions over 12 weeks (two sessions per week).
Co-primary outcomes are working memory (N-back d-prime) and frontal gamma coherence, assessed at baseline and Week 12. Secondary outcomes include global cognition, symptoms (PANSS), negative symptoms (CAINS), and community functioning (ILSS, UPSA-Brief, SFS). Follow-up assessments are conducted at 3 months (Week 24) and 6 months (Week 36) post-treatment. Primary analysis uses mixed model repeated measures (MMRM).
Studietype
Inschrijving (Geschat)
Fase
- Fase 2
Contacten en locaties
Studiecontact
- Naam: Autumn Harris Study Coordinator
- Telefoonnummer: 858-267-2257
- E-mail: fnlab@health.ucsd.edu
Studie Contact Back-up
- Naam: Jason Holden Lab Manager, PhD
- Telefoonnummer: 858-267-2257
- E-mail: fnlab@health.ucsd.edu
Deelname Criteria
Geschiktheidscriteria
Leeftijden die in aanmerking komen voor studie
- Volwassen
Accepteert gezonde vrijwilligers
Beschrijving
Inclusion Criteria:
- 1. DSM-5 diagnosis of schizophrenia or schizoaffective disorder, confirmed by the Structured Clinical Interview for DSM-5 (SCID-5) 2. Age 18-55 years 3. Clinically stable: no psychiatric hospitalization in the 3 months prior to enrollment 4. No change in antipsychotic medication type or dosage within 4 weeks prior to baseline assessment 5. Ascertained to be clinically and medically stable by a study investigator 6. Does not meet DSM-5 diagnostic criteria for bipolar disorder or current major depressive episode 7. No electroconvulsive therapy (ECT) within 6 months of baseline assessment 8. Able to read and speak English (corrected vision or hearing aids acceptable) 9. Able and willing to provide written informed consent
Exclusion Criteria:
- 1. Self-reported history of seizure disorder 2. Diagnosed with multiple sclerosis 3. History of stroke or major vascular disease, including insulin-dependent diabetes mellitus 4. HIV/AIDS diagnosis 5. Current (not past) major depressive episode 6. Substance use disorder other than nicotine use disorder or caffeine use disorder in the past year 7. Brain cancer (primary or metastatic) 8. Prior head injury involving loss of consciousness 9. Inability to read or speak English 10. Color blindness that interferes with administration of study assessments 11. Neuropsychological or cognitive testing in the past 6 months using the same measures as this study 12. Score on Letter-Number Sequencing greater than 1 standard deviation above the age-normed mean
Studie plan
Hoe is de studie opgezet?
Ontwerpdetails
- Primair doel: Behandeling
- Toewijzing: Gerandomiseerd
- Interventioneel model: Parallelle opdracht
- Masker: Verdrievoudigen
Wapens en interventies
Deelnemersgroep / Arm |
Interventie / Behandeling |
|---|---|
|
Experimenteel: Gamma EEG-NFB
Participants receive real-time gamma EEG neurofeedback targeting frontal gamma coherence (F3 and F4 electrodes, 30-50 Hz) via a CGX wireless 32-electrode headset.
Each session includes a 1-minute resting baseline followed by two 15-minute training blocks.
Positive reinforcement (images and music) is contingent on meeting an individualized gamma coherence threshold.
Sessions are twice weekly for 12 weeks (30 total sessions).
|
Gamma EEG neurofeedback delivered via CGX/Cognionics wireless headset (FDA cleared for research use).
Active arm receives real-time gamma coherence feedback; sham arm receives pre-recorded feedback unrelated to own brain activity.
Andere namen:
|
|
Sham-vergelijker: Sham EEG-NFB
Participants undergo identical procedures to the active arm including EEG electrode placement and the same session structure, twice weekly for 12 weeks.
However, the feedback displayed is pre-recorded from prior participants and has no relationship to the participant's own brain activity.
Participants and outcome assessors are blinded to group assignment.
|
Gamma EEG neurofeedback delivered via CGX/Cognionics wireless headset (FDA cleared for research use).
Active arm receives real-time gamma coherence feedback; sham arm receives pre-recorded feedback unrelated to own brain activity.
Andere namen:
|
Wat meet het onderzoek?
Primaire uitkomstmaten
Uitkomstmaat |
Maatregel Beschrijving |
Tijdsspanne |
|---|---|---|
|
N-back 2-back target accuracy (d-prime)
Tijdsspanne: Baseline to Week 12
|
Working memory performance on the N-back task (2-back condition), analyzed with mixed model repeated measures (MMRM).
|
Baseline to Week 12
|
|
Frontal gamma coherence during N-back task
Tijdsspanne: Baseline to Week 12
|
EEG-derived frontal gamma coherence (30-50 Hz, F3-F4) measured during 2-back task performance.
|
Baseline to Week 12
|
|
Independent Living Skills Survey (ILSS) total score
Tijdsspanne: Baseline to Week 12
|
Functional outcome assessing independent living skills relevant to community functioning.
|
Baseline to Week 12
|
Medewerkers en onderzoekers
Onderzoekers
- Hoofdonderzoeker: Fiza Singh, MD, University of California, San Diego
Studie record data
Bestudeer belangrijke data
Studie start (Geschat)
Primaire voltooiing (Geschat)
Studie voltooiing (Geschat)
Studieregistratiedata
Eerst ingediend
Eerst ingediend dat voldeed aan de QC-criteria
Eerst geplaatst (Werkelijk)
Updates van studierecords
Laatste update geplaatst (Werkelijk)
Laatste update ingediend die voldeed aan QC-criteria
Laatst geverifieerd
Meer informatie
Termen gerelateerd aan deze studie
Trefwoorden
Aanvullende relevante MeSH-voorwaarden
Andere studie-ID-nummers
- R01MH139831
Plan Individuele Deelnemersgegevens (IPD)
Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?
Beschrijving IPD-plan
IPD-tijdsbestek voor delen
IPD-toegangscriteria voor delen
IPD delen Ondersteunend informatietype
- LEERPROTOCOOL
- SAP
- ICF
Informatie over medicijnen en apparaten, studiedocumenten
Bestudeert een door de Amerikaanse FDA gereguleerd geneesmiddel
Bestudeert een door de Amerikaanse FDA gereguleerd apparaatproduct
product vervaardigd in en geëxporteerd uit de V.S.
Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .