40 Hz Audio-Visual Stimulation Therapy for AD
A Clinical Trial Assessing the Efficacy of 40 Hz Auditory-Visual Stimulation for Patients With Alzheimer's Disease
This is a single-center, parallel-group, double-blind randomized controlled trial conducted at the First Affiliated Hospital of Xiamen University, enrolling 50 participants with Alzheimer's disease (AD)-derived mild cognitive impairment (MCI) or mild AD aged 50-80 years with ≥4 years of education. Subjects must meet diagnostic criteria per Chinese AD guidelines, show medial temporal lobe atrophy on baseline brain MRI, have a reliable caregiver, and be capable of completing all assessments. Exclusion criteria include severe visual/auditory impairment, non-AD dementia, recent neuromodulation therapy, uncontrolled severe systemic diseases, prominent psychiatric disorders, significant cerebral focal lesions on MRI, and other conditions precluding safe participation.
Eligible participants will be randomly assigned to either the 40 Hz audio-visual stimulation group or the placebo group. The intervention lasts 1 hour once daily for 12 weeks, with a total subject follow-up period of 36 weeks (12-week treatment + 24-week observational follow-up). The primary efficacy outcome is the change from baseline in the 11-item Alzheimer's Disease Assessment Scale-Cognitive subscale (ADAS-Cog) at the end of treatment. Secondary outcomes include changes in Mini-Mental State Examination (MMSE) and ADCS-Activities of Daily Living (ADCS-ADL) scores across all follow-up visits. Exploratory biomarkers cover plasma Aβ42, Aβ40, Tau-217, gamma wave power on electroencephalography (EEG), and repeat Aβ-PET imaging (if previously performed). Cognitive, functional, emotional, EEG, and blood biomarker assessments will be conducted at scheduled time points. Safety monitoring focuses on intervention-related adverse events such as headache and dizziness, with detailed recording of onset, duration and accompanying symptoms.
Statistical analyses will use two-sided tests at α=0.05. Linear mixed models and repeated-measures ANOVA with ANCOVA adjustment for covariates will analyze the primary endpoint; appropriate parametric or nonparametric tests will be applied for secondary and exploratory outcomes. Baseline group balance will be compared via t-tests, Mann-Whitney U tests or chi-square tests. All data processing and statistical modeling will be performed using Python 3.11 and related analytical packages. The trial runs from July 2026 to December 2027.
調査の概要
状態
状態
条件
条件
介入・治療
介入・治療
研究の種類
研究の種類
入学 (推定)
入学
段階
段階
- 適用できない
連絡先と場所
研究連絡先
研究連絡先
- 名前:Ping Zhong, phd
- 電話番号:15280805698
- メール:jgszp2004@163.com
研究場所
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Fujian
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Xiamen、Fujian、中国、361003
- The First Affiliated Hospital of Xiamen University
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コンタクト:
- Neurosurgery department
- 電話番号:15280805698
- メール:jgszp2004@163.com
-
-
参加基準
適格基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
説明
Inclusion Criteria Subjects diagnosed with Alzheimer's disease-derived mild cognitive impairment (AD-MCI) or mild Alzheimer's dementia, diagnosed in accordance with Chinese Guidelines for the Diagnosis and Treatment of Alzheimer's Dementia (2020 Edition) and Chinese Expert Consensus on the Diagnosis and Treatment of AD-derived Mild Cognitive Impairment (2021).
Clinical Dementia Rating sum of boxes (CDR-SB) score ranges from 0.5 to 1. Age between 50 and 80 years old, with education ≥ 4 years, any biological sex. Able to cooperate with 12-week intervention and all scheduled assessments including cognitive scales, EEG, blood tests and brain imaging.
Subject or legal guardian provides written informed consent and agrees to comply with study procedures.
Baseline brain MRI with coronal hippocampal sequence shows medial temporal lobe atrophy (MTA) grade ≥2, highly suggestive of AD pathology.
Has a stable, reliable caregiver throughout the study period. Exclusion Criteria Severe visual impairment (uncorrected visual acuity <0.1, unable to detect flickering light) or severe hearing loss (pure tone audiometry ≥60 dB, cannot perceive 40 Hz auditory stimulation).
Cognitive decline caused by non-AD etiologies: vascular dementia, mixed dementia, dementia with Lewy bodies, Parkinson's disease dementia, frontotemporal dementia, Huntington's disease, cognitive impairment secondary to thyroid disorders, vitamin B12/folate deficiency, or other organic brain diseases.
Received other neuromodulation therapies (TMS, tDCS, etc.) within 3 months prior to screening or participated in other interventional cognitive trials recently.
Uncontrolled severe systemic diseases: advanced heart failure, arrhythmia, refractory hypertension, severe hepatic/renal dysfunction, active malignant tumors.
History of schizophrenia, mania or other severe psychiatric disorders; GDS ≥15 or HAMA ≥14 at screening; receiving antidepressant, anxiolytic or antipsychotic medication at screening.
Hachinski Ischemic Score (HIS) >4. Baseline MRI shows significant focal cerebral lesions: ≥2 infarcts >2 cm; infarcts in thalamus, hippocampus, entorhinal cortex or angular gyrus; Fazekas white matter hyperintensity grade ≥3.
Active HIV, syphilis, hepatitis B/C or other severe chronic infectious diseases.
Severe communication disorders or altered consciousness preventing completion of assessments or intervention.
Refusal of informed consent by legal guardian. Any other clinical condition judged by investigators to make the subject unsuitable for participation.
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 主な目的:処理
- 割り当て:ランダム化
- 介入モデル:並列代入
- マスキング:4倍
アーム数
武器と介入
参加者グループ / アーム参加者グループ / アーム |
介入・治療介入・治療 |
|---|---|
|
実験的:40 Hz Audio-Visual Stimulation Experimental Group
|
Non-invasive audio-visual neuromodulation device generating synchronized 40 Hz light flicker and sound stimulation. Subjects receive 1 session daily, 1 hour per session, for a total of 12 consecutive weeks. After intervention, 24 weeks of observational follow-up without stimulation is performed. |
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プラセボコンパレーター:Sham Audio-Visual Stimulation Placebo Control Group
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Identical external device appearance with non-therapeutic low-frequency light and sound signals without 40 Hz gamma oscillation. Administration frequency, duration and operation process are completely consistent with the experimental group, once daily for 1 hour over 12 weeks, followed by 24 weeks of off-treatment follow-up. |
この研究は何を測定していますか?
主要な結果の測定
主要な結果の測定
結果測定 |
時間枠 |
|---|---|
|
Change from baseline in the 11-item Alzheimer's Disease Assessment Scale-Cognitive Subscale (ADAS-Cog11) total score at Week 12 (end of intervention)
時間枠:Baseline and Week 12 (12 weeks after randomization)
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Baseline and Week 12 (12 weeks after randomization)
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二次結果の測定
二次結果の測定
結果測定 |
時間枠 |
|---|---|
|
Change from baseline in ADCS-Activities of Daily Living (ADCS-ADL) total score
時間枠:Baseline, Week 12, Week 36
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Baseline, Week 12, Week 36
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その他の成果指標
その他の成果指標
結果測定 |
時間枠 |
|---|---|
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Changes in plasma Aβ42, Aβ40 and Tau-217 levels from baseline
時間枠:Baseline, Week 12
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Baseline, Week 12
|
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Changes on Aβ-PET imaging (if baseline Aβ-PET was performed)
時間枠:Baseline, Week 12 (only for subjects with baseline Aβ-PET scan)
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Baseline, Week 12 (only for subjects with baseline Aβ-PET scan)
|
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Changes in electroencephalography (EEG) gamma wave power from baseline
時間枠:Baseline, Week 12, Week 36
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Baseline, Week 12, Week 36
|
協力者と研究者
出版物と役立つリンク
一般刊行物
- Jones M, McDermott B, Oliveira BL, O'Brien A, Coogan D, Lang M, Moriarty N, Dowd E, Quinlan L, Mc Ginley B, Dunne E, Newell D, Porter E, Elahi MA, O' Halloran M, Shahzad A. Gamma Band Light Stimulation in Human Case Studies: Groundwork for Potential Alzheimer's Disease Treatment. J Alzheimers Dis. 2019;70(1):171-185. doi: 10.3233/JAD-190299.
- Iaccarino HF, Singer AC, Martorell AJ, Rudenko A, Gao F, Gillingham TZ, Mathys H, Seo J, Kritskiy O, Abdurrob F, Adaikkan C, Canter RG, Rueda R, Brown EN, Boyden ES, Tsai LH. Gamma frequency entrainment attenuates amyloid load and modifies microglia. Nature. 2016 Dec 7;540(7632):230-235. doi: 10.1038/nature20587.
- Chan D, Suk HJ, Jackson BL, Milman NP, Stark D, Klerman EB, Kitchener E, Fernandez Avalos VS, de Weck G, Banerjee A, Beach SD, Blanchard J, Stearns C, Boes AD, Uitermarkt B, Gander P, Howard M 3rd, Sternberg EJ, Nieto-Castanon A, Anteraper S, Whitfield-Gabrieli S, Brown EN, Boyden ES, Dickerson BC, Tsai LH. Gamma frequency sensory stimulation in mild probable Alzheimer's dementia patients: Results of feasibility and pilot studies. PLoS One. 2022 Dec 1;17(12):e0278412. doi: 10.1371/journal.pone.0278412. eCollection 2022.
- Da X, Hempel E, Ou Y, Rowe OE, Malchano Z, Hajos M, Kern R, Megerian JT, Cimenser A. Noninvasive Gamma Sensory Stimulation May Reduce White Matter and Myelin Loss in Alzheimer's Disease. J Alzheimers Dis. 2024;97(1):359-372. doi: 10.3233/JAD-230506.
研究記録日
主要日程の研究
研究開始 (推定)
研究開始
一次修了 (推定)
一次修了
研究の完了 (推定)
研究の完了
試験登録日
最初に提出
最初に提出
QC基準を満たした最初の提出物
QC基準を満たした最初の提出物
最初の投稿 (実際)
最初の投稿
学習記録の更新
投稿された最後の更新 (実際)
投稿された最後の更新
QC基準を満たした最後の更新が送信されました
QC基準を満たした最後の更新が送信されました
最終確認日
最終確認日
詳しくは
本研究に関する用語
その他の研究ID番号
その他の研究ID番号
- neurosurgeonxmu
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
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