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BCI With 40Hz Stimulation in Alzheimer's Disease

25 de mayo de 2026 actualizado por: liu jun, Ruijin Hospital

EEG-Based Non-Invasive Brain-Computer Interface Combined With 40Hz Audio-Visual Stimulation for Cognitive Function in Patients With Alzheimer's Disease: A Randomized Double-Blind Controlled Study

This study aims to evaluate the efficacy and safety of non-invasive brain-computer interface (BCI) neuromodulation technique combined with 40Hz audio-visual stimulation on cognitive function in patients with Alzheimer's disease (AD). This is a single-center, randomized, double-blind, sham-controlled trial. A total of 90 participants with Aβ-PET positive AD diagnosed according to NIA-AA criteria will be enrolled and randomly assigned to three groups in a 1:1:1 ratio: (1) 40Hz stimulation group (fixed 40Hz audio-visual stimulation, 60 minutes daily for 6 months), (2) individualized stimulation group (closed-loop BCI with real-time EEG feedback to adjust stimulation parameters, 60 minutes daily for 6 months), and (3) sham stimulation group (inactive stimulation, same duration). The primary outcome is the change in MoCA-B score from baseline to 6 months. Secondary outcomes include changes in cognitive domain-specific assessments (AVLT, STT, DST), multimodal brain imaging, EEG parameters, peripheral blood AD biomarkers, safety, tolerability, and comparison of efficacy between open-loop and closed-loop stimulation.

Descripción general del estudio

Estado

Reclutamiento

Condiciones

Intervención / Tratamiento

Tipo de estudio

Intervencionista

Inscripción (Estimado)

90

Fase

  • No aplica

Contactos y Ubicaciones

Esta sección proporciona los datos de contacto de quienes realizan el estudio e información sobre dónde se lleva a cabo este estudio.

Estudio Contacto

Copia de seguridad de contactos de estudio

Ubicaciones de estudio

  • Porcelana
    • Shanghai Municipality
      • Shanghai, Shanghai Municipality, Porcelana, 2000025
        • Reclutamiento
        • Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine
        • Contacto:
        • Contacto:
        • Investigador principal:
          • Jun Liu, MD, Ph.D
        • Sub-Investigador:
          • Binyin Li, MD, Ph.D

Criterios de participación

Los investigadores buscan personas que se ajusten a una determinada descripción, denominada criterio de elegibilidad. Algunos ejemplos de estos criterios son el estado de salud general de una persona o tratamientos previos.

Criterio de elegibilidad

Edades elegibles para estudiar

  • Adulto
  • Adulto Mayor

Acepta Voluntarios Saludables

No

Descripción

Inclusion Criteria:

  1. Diagnosis of Alzheimer's disease according to the NIA-AA 2018 diagnostic criteria.
  2. Age between 50 and 80 years, inclusive.
  3. Positive Aβ-PET scan result.
  4. Has a stable caregiver who can assist with daily stimulation intervention.
  5. Chronic medical conditions stable for at least 30 days.
  6. Adequate vision and hearing to perform testing (at minimum, ability to perceive light and communicate in daily conversation).
  7. Good mobility (able to walk independently or with assistive devices).
  8. Willing and able to provide voluntary signed informed consent.

Exclusion Criteria:

  1. History of epilepsy or seizure disorder.
  2. Inability to undergo MRI or presence of significant abnormalities on MRI screening.
  3. Geriatric Depression Scale (GDS) score > 6.
  4. Current suicidal ideation or suicide attempt within the past 6 months.
  5. Other major neurological disorders, including but not limited to: dementia with Lewy bodies, frontotemporal dementia, Huntington's disease, Creutzfeldt-Jakob disease, Down syndrome, or mixed dementia; other neurodegenerative diseases (Parkinson's disease, amyotrophic lateral sclerosis, multiple sclerosis, etc.); history of severe brain infection (meningitis/encephalitis) or multiple concussions; metabolic/systemic diseases causing cognitive impairment (syphilis, vitamin B12 or folate deficiency, etc.).
  6. Psychiatric disorders.
  7. Severe cardiac disease, chronic liver/kidney/respiratory disease, or uncontrolled diabetes mellitus or thyroid disease.
  8. History of drug or alcohol abuse within the past 12 months.
  9. Current exposure to anti-Aβ antibody immunotherapies.
  10. Current use of memantine within 30 days prior to intervention.
  11. Life expectancy < 24 months.

Plan de estudios

Esta sección proporciona detalles del plan de estudio, incluido cómo está diseñado el estudio y qué mide el estudio.

¿Cómo está diseñado el estudio?

Detalles de diseño

  • Propósito principal: Tratamiento
  • Asignación: Aleatorizado
  • Modelo Intervencionista: Asignación paralela
  • Enmascaramiento: Triple

Armas e Intervenciones

Grupo de participantes/brazo
Intervención / Tratamiento
Experimental: 40Hz Stimulation Group
Fixed 40Hz combined audio-visual stimulation, 60 minutes per day, once daily, for 6 consecutive months.
Dispositivo: 40Hz Stimulation Group
Participants receive fixed 40Hz combined audio-visual stimulation (visual + auditory) for 60 minutes per day, once daily, for 6 consecutive months. The stimulation parameters are fixed and do not adjust based on EEG feedback.
Experimental: Individualized Stimulation Group
40Hz combined audio-visual stimulation with EEG-based closed-loop feedback adjustment, 60 minutes per day, once daily, for 6 consecutive months.
Dispositivo: Individualized Stimulation Group
Participants receive 40Hz combined audio-visual stimulation (visual + auditory) for 60 minutes per day, once daily, for 6 consecutive months. In addition, the device performs EEG acquisition and closed-loop feedback adjustment based on preset algorithms. This allows individualized, closed-loop neuromodulation.
Comparador falso: Sham Stimulation Group
Identical appearance and operation as the active device, but without effective individualized audio-visual stimulation. Only low-intensity, randomized flashes and audio cues are delivered.
Dispositivo: Sham Stimulation Group
Participants receive sham stimulation using a device identical in appearance and weight to the active device. The sham device does not output effective individualized audio-visual stimulation; only low-intensity, randomized flashes and audio cues are delivered.

¿Qué mide el estudio?

Medidas de resultado primarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Change in Montreal Cognitive Assessment - Basic (MoCA-B) Score
Periodo de tiempo: Baseline (pre-treatment) and 6 months (end of treatment)
The primary outcome is the change in MoCA-B score from baseline to 6 months. The MoCA-B is a validated cognitive screening tool for assessing global cognitive function. The score ranges from 0 to 30, with higher scores indicating better cognitive function. The change score (ΔMoCA-B) will be calculated as the 6-month score minus the baseline score. Assessments will be performed by trained neuropsychologists who are blinded to group assignment.
Baseline (pre-treatment) and 6 months (end of treatment)

Medidas de resultado secundarias

Medida de resultado
Medida Descripción
Periodo de tiempo
Change in Auditory Verbal Learning Test (AVLT) Score
Periodo de tiempo: Baseline, 3 months, and 6 months
The AVLT is a validated neuropsychological test assessing verbal learning and memory function. The test evaluates immediate recall, delayed recall, and recognition. Higher scores indicate better verbal memory performance. Assessments will be performed by trained neuropsychologists blinded to group assignment.
Baseline, 3 months, and 6 months
Change in Shape Trails Test (STT-A and STT-B) Score
Periodo de tiempo: Baseline, 3 months, and 6 months
The STT is a validated neuropsychological test assessing executive function, attention, and psychomotor speed. STT-A primarily measures processing speed, while STT-B measures executive function and task-switching ability. Lower completion time indicates better performance. Assessments will be performed by trained neuropsychologists blinded to group assignment.
Baseline, 3 months, and 6 months
Change in Digit Span Test (DST) Score
Periodo de tiempo: Baseline, 3 months, and 6 months
The DST is a validated neuropsychological test assessing working memory and attention. The test includes forward digit span (attention) and backward digit span (working memory). Higher scores indicate better working memory performance. Assessments will be performed by trained neuropsychologists blinded to group assignment.
Baseline, 3 months, and 6 months
Change in Structural MRI Parameters
Periodo de tiempo: Baseline and 6 months
Changes in structural brain imaging parameters will be assessed using 3T MRI, including gray matter volume, cortical thickness, and hippocampal volume. These parameters will be used to evaluate the neuroprotective effects of the intervention. Imaging data will be analyzed by neuroradiologists blinded to group assignment.
Baseline and 6 months
Change in Functional MRI (fMRI) Parameters
Periodo de tiempo: Baseline and 6 months
Changes in functional brain connectivity will be assessed using resting-state fMRI. Key parameters include functional connectivity within the default mode network (DMN) and gamma-band related networks. Imaging data will be analyzed by neuroradiologists blinded to group assignment.
Baseline and 6 months
Change in Peripheral Blood Alzheimer's Disease Biomarkers
Periodo de tiempo: Baseline and 6 months
Changes in peripheral blood biomarkers associated with Alzheimer's disease pathology will be assessed. Biomarkers include: (1) amyloid beta 42 (Aβ42); (2) amyloid beta 40 (Aβ40) and the Aβ42/Aβ40 ratio; (3) phosphorylated tau (p-Tau181 or p-Tau217); (4) total tau (t-Tau); (5) neurofilament light chain (NfL).
Baseline and 6 months
Change in Aβ-PET Standardized Uptake Value Ratio (SUVR)
Periodo de tiempo: Baseline and 6 months
Changes in brain amyloid beta burden will be assessed using Aβ-PET imaging. The primary measure is the standardized uptake value ratio (SUVR) in predefined regions of interest (including frontal, temporal, parietal, and occipital cortices, as well as the precuneus and cingulate). Higher SUVR indicates greater amyloid burden. Imaging data will be analyzed by nuclear medicine physicians blinded to group assignment.
Baseline and 6 months
Change in tau-PET Standardized Uptake Value Ratio (SUVR)
Periodo de tiempo: Baseline and 6 months
Changes in brain tau pathology will be assessed using tau-PET imaging. The primary measure is the standardized uptake value ratio (SUVR) in predefined regions of interest (including medial temporal lobe, temporal cortex, parietal cortex, and other Braak stage regions). Higher SUVR indicates greater tau burden. Imaging data will be analyzed by nuclear medicine physicians blinded to group assignment.
Baseline and 6 months
Incidence of Serious Adverse Events (SAEs)
Periodo de tiempo: Baseline through 6 months (entire study period)
The incidence, severity, and causality of all serious adverse events (SAEs) will be assessed throughout the study period. SAEs include: death, life-threatening events, persistent or significant disability or incapacity, hospitalization or prolonged hospitalization, fetal distress, fetal death, congenital anomalies or birth defects, and any other important medical events that may jeopardize the patient or require intervention to prevent one of the above outcomes.
Baseline through 6 months (entire study period)
Incidence of Adverse Events (AEs)
Periodo de tiempo: Baseline through 6 months (entire study period)
The incidence, severity, and causality of all adverse events (AEs) will be assessed throughout the study period. AEs include but are not limited to: transient dizziness, visual fatigue, headache, nausea, attention fluctuation, drowsiness, eye dryness, tinnitus, irritability, anxiety, and any other unexpected events. Severity will be graded as mild, moderate, or severe. Relationship to the intervention will be classified as: definitely related, possibly related, potentially related, possibly unrelated, or definitely unrelated.
Baseline through 6 months (entire study period)

Colaboradores e Investigadores

Aquí es donde encontrará personas y organizaciones involucradas en este estudio.

Patrocinador

Ruijin Hospital

Fechas de registro del estudio

Estas fechas rastrean el progreso del registro del estudio y los envíos de resultados resumidos a ClinicalTrials.gov. Los registros del estudio y los resultados informados son revisados ​​por la Biblioteca Nacional de Medicina (NLM) para asegurarse de que cumplan con los estándares de control de calidad específicos antes de publicarlos en el sitio web público.

Fechas importantes del estudio

Inicio del estudio (Actual)

1 de mayo de 2026

Finalización primaria (Estimado)

31 de octubre de 2027

Finalización del estudio (Estimado)

31 de octubre de 2027

Fechas de registro del estudio

Enviado por primera vez

25 de mayo de 2026

Primero enviado que cumplió con los criterios de control de calidad

25 de mayo de 2026

Publicado por primera vez (Actual)

1 de junio de 2026

Actualizaciones de registros de estudio

Última actualización publicada (Actual)

1 de junio de 2026

Última actualización enviada que cumplió con los criterios de control de calidad

25 de mayo de 2026

Última verificación

1 de mayo de 2026

Más información

Términos relacionados con este estudio

Palabras clave

Términos MeSH relevantes adicionales

Otros números de identificación del estudio

  • 2026222

Plan de datos de participantes individuales (IPD)

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INDECISO

Información sobre medicamentos y dispositivos, documentos del estudio

Estudia un producto farmacéutico regulado por la FDA de EE. UU.

No

Estudia un producto de dispositivo regulado por la FDA de EE. UU.

No

Esta información se obtuvo directamente del sitio web clinicaltrials.gov sin cambios. Si tiene alguna solicitud para cambiar, eliminar o actualizar los detalles de su estudio, comuníquese con register@clinicaltrials.gov. Tan pronto como se implemente un cambio en clinicaltrials.gov, también se actualizará automáticamente en nuestro sitio web. .

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