BCI With 40Hz Stimulation in Alzheimer's Disease
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
Studieoversigt
Status
Status
Betingelser
Betingelser
Intervention / Behandling
Intervention / Behandling
Undersøgelsestype
Undersøgelsestype
Tilmelding (Anslået)
Tilmelding
Fase
Fase
- Ikke anvendelig
Kontakter og lokationer
Studiekontakt
Studiekontakt
- Navn: Chao Gao
- Telefonnummer: +8618217590273
- E-mail: anshangaochao@163.com
Undersøgelse Kontakt Backup
- Navn: Binyin Li, MD,Ph.D
- Telefonnummer: +8613681884221
- E-mail: libinyin@126.com
Studiesteder
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Shanghai Municipality
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Shanghai, Shanghai Municipality, Kina, 2000025
- Rekruttering
- Ruijin Hospital Affiliated to Shanghai Jiao Tong University School of Medicine
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Kontakt:
- Chao Gao
- E-mail: anshangaochao@163.com
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Kontakt:
- Chao Gao, MD, Ph.D
- Telefonnummer: +8618217590273
- E-mail: anshangaochao@163.com
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Ledende efterforsker:
- Jun Liu, MD, Ph.D
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Underforsker:
- Binyin Li, MD, Ph.D
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Deltagelseskriterier
Berettigelseskriterier
Berettigelseskriterier
Aldre berettiget til at studere
- Voksen
- Ældre voksen
Tager imod sunde frivillige
Beskrivelse
Inclusion Criteria:
- Diagnosis of Alzheimer's disease according to the NIA-AA 2018 diagnostic criteria.
- Age between 50 and 80 years, inclusive.
- Positive Aβ-PET scan result.
- Has a stable caregiver who can assist with daily stimulation intervention.
- Chronic medical conditions stable for at least 30 days.
- Adequate vision and hearing to perform testing (at minimum, ability to perceive light and communicate in daily conversation).
- Good mobility (able to walk independently or with assistive devices).
- Willing and able to provide voluntary signed informed consent.
Exclusion Criteria:
- History of epilepsy or seizure disorder.
- Inability to undergo MRI or presence of significant abnormalities on MRI screening.
- Geriatric Depression Scale (GDS) score > 6.
- Current suicidal ideation or suicide attempt within the past 6 months.
- 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.).
- Psychiatric disorders.
- Severe cardiac disease, chronic liver/kidney/respiratory disease, or uncontrolled diabetes mellitus or thyroid disease.
- History of drug or alcohol abuse within the past 12 months.
- Current exposure to anti-Aβ antibody immunotherapies.
- Current use of memantine within 30 days prior to intervention.
- Life expectancy < 24 months.
Studieplan
Hvordan er undersøgelsen tilrettelagt?
Design detaljer
- Primært formål: Behandling
- Tildeling: Randomiseret
- Interventionel model: Parallel tildeling
- Maskning: Tredobbelt
Antal våben
Våben og indgreb
Deltagergruppe / ArmDeltagergruppe / Arm |
Intervention / BehandlingIntervention / Behandling |
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Eksperimentel: 40Hz Stimulation Group
Fixed 40Hz combined audio-visual stimulation, 60 minutes per day, once daily, for 6 consecutive months.
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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.
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Eksperimentel: 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.
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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.
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Sham-komparator: 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.
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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.
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Hvad måler undersøgelsen?
Primære resultatmål
Primære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Change in Montreal Cognitive Assessment - Basic (MoCA-B) Score
Tidsramme: Baseline (pre-treatment) and 6 months (end of treatment)
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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.
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Baseline (pre-treatment) and 6 months (end of treatment)
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Sekundære resultatmål
Sekundære resultatmål
Resultatmål |
Foranstaltningsbeskrivelse |
Tidsramme |
|---|---|---|
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Change in Auditory Verbal Learning Test (AVLT) Score
Tidsramme: Baseline, 3 months, and 6 months
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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.
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Baseline, 3 months, and 6 months
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Change in Shape Trails Test (STT-A and STT-B) Score
Tidsramme: Baseline, 3 months, and 6 months
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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.
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Baseline, 3 months, and 6 months
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Change in Digit Span Test (DST) Score
Tidsramme: Baseline, 3 months, and 6 months
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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.
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Baseline, 3 months, and 6 months
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Change in Structural MRI Parameters
Tidsramme: Baseline and 6 months
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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.
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Baseline and 6 months
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Change in Functional MRI (fMRI) Parameters
Tidsramme: Baseline and 6 months
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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.
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Baseline and 6 months
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Change in Peripheral Blood Alzheimer's Disease Biomarkers
Tidsramme: Baseline and 6 months
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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).
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Baseline and 6 months
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Change in Aβ-PET Standardized Uptake Value Ratio (SUVR)
Tidsramme: Baseline and 6 months
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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.
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Baseline and 6 months
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Change in tau-PET Standardized Uptake Value Ratio (SUVR)
Tidsramme: Baseline and 6 months
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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.
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Baseline and 6 months
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Incidence of Serious Adverse Events (SAEs)
Tidsramme: Baseline through 6 months (entire study period)
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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.
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Baseline through 6 months (entire study period)
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Incidence of Adverse Events (AEs)
Tidsramme: Baseline through 6 months (entire study period)
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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.
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Baseline through 6 months (entire study period)
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Samarbejdspartnere og efterforskere
Sponsor
Sponsor
Datoer for undersøgelser
Studer store datoer
Studiestart (Faktiske)
Studiestart
Primær færdiggørelse (Anslået)
Primær færdiggørelse
Studieafslutning (Anslået)
Studieafslutning
Datoer for studieregistrering
Først indsendt
Først indsendt
Først indsendt, der opfyldte QC-kriterier
Først indsendt, der opfyldte QC-kriterier
Først opslået (Faktiske)
Først opslået
Opdateringer af undersøgelsesjournaler
Sidste opdatering sendt (Faktiske)
Sidste opdatering sendt
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidste opdatering indsendt, der opfyldte kvalitetskontrolkriterier
Sidst verificeret
Sidst verificeret
Mere information
Begreber relateret til denne undersøgelse
Yderligere relevante MeSH-vilkår
Andre undersøgelses-id-numre
Andre undersøgelses-id-numre
- 2026222
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