NCT05544201Completed
Transcranial Alternating Current Stimulation (TACS) for Sleep Disturbances in Neurocognitive Disorders Due to Alzheimer's Disease
Gamma-band High-definition Transcranial Alternating Current Stimulation (HD-tACS) for Sleep Disturbances in Mild Neurocognitive Disorders Due to Alzheimer's Disease
Source: ClinicalTrials.gov · Last updated 18 Mar 2024
Brief summary (registry, in English)
Background: Sleep disturbances are highly prevalent in ageing population and patients with age-related neurodegenerative diseases, which severely affect cognition and even lead to accumulated amyloid-β (Aβ). At present, non-pharmacological interventions for sleep disturbances in dementia patients are accepted as first line of treatment, of which the evidence from clinical trials is very limited. Encouraging results from recent studies on transcranial direct current stimulation (tDCS) showed moderate positive effects on sleep quality in preclinical Alzheimer's disease (AD). Compared to tDCS, high-definition transcranial alternating current stimulation (HD-tACS) enables the entrainment of neuronal activities with optimized focality through injecting small electric current with a specific frequency and has significant enhancement effects on slow wave activities. Objectives: The investigators aim to 1) investigate and compare the safety, efficacy and sustainability of 40 Hz HD-tACS and HD-tDCS over left dorsolateral prefrontal cortex (DLPFC) in mild neurocognitive disorder due to AD (NCD-AD) patients with sleep disturbances; 2) examine the relationship between the changes in sleep quality, cognitive function and saliva Aβ levels. Methods: Chinese right-handed mild NCD-AD patients with sleep disturbances (aged from 60 to 90 years) will be randomly assigned to a 4-week intervention of either HD-tACS, HD-tDCS, or sham HD-tCS, with 33 participants per arm. Before intervention, structural magnetic resonance imaging (MRI) data is used to construct individual realistic head model. Comprehensive assessments, including sleep quality, cognitive performance and saliva Aβ levels will be conducted at baseline, 4th week, 8th week, 12th week and 24th week. Program adherence and adverse effects will be monitored throughout intervention. Data analysis: The primary outcomes will be the changes in sleep quality and memory performance with modality-driven paradigms (HD-tACS, HD-tDCS, sham HD-tCS), and comparisons of group differences across different time points. Secondary outcomes will be the changes objective sleep pattern, global cognition, saliva Aβ levels and quality of life. Intention-to-treat analysis will be carried out. Changes of efficacy indicators from baseline to each follow up point will be tested with mixed effect model. Significance: This study aims to investigate the feasibility, safety and efficacy of HD-tACS and HD-tDCS over left DLPFC for sleep disturbances and cognitive dysfunction in mild NCD-AD patients. It wills also test the program adherence, tolerability and adverse effects of this innovative neurotechonology. Information will be helpful for in-depth understanding the relationship of "sleep disturbances-amyloid deposition" and guiding the further studies of sleep medicine and neurodegenerative diseases.
- Status (registry)
- Completed
- Study type
- Interventional
- Enrollment
- 99 (actual)
- First submitted
- 14 Sept 2022
- Start date
- 1 Oct 2022
- Primary completion date
- 30 Dec 2023
- Lead sponsor
- Chinese University of Hong Kong
- Diseases
- Alzheimer disease
- NCT number
- NCT05544201
What you commit to
- Study type: Interventional
- Participants enrolled: 99
- From 1 Oct 2022 to the primary completion date, 30 Dec 2023
- 1 site in 1 country
- Visits and tests: ask the trial team, the registry does not list them
Built from the registry fields of ClinicalTrials.gov. It describes the study, not your situation.
Who cannot take part
Copied verbatim from ClinicalTrials.gov and grouped by topic. Only the trial team decides who can take part.
Prior treatment
- Previous diagnosis of other major neurocognitive disorders;
- Already attending regular training, such as cognitive behavioral therapy;
Other illness
- Past history of bipolar disorders or psychosis;
- Taking a psychotropic or other medication known to affect cognition (e.g. anti-dementia medication);
- History of major neurological deficit including stroke, transient ischemic attack or brain tumor.
Other
- Physically frail affecting attendance to training sessions;
- Significant communicative impairments.
Who the study is looking for
- Chinese, aged from 60 to 90 years.
- Mild neurocognitive disorder due to Alzheimer's disease (NCD-AD) is diagnosed according to the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition (DSM-5). NCD-AD patients are defined by the following criteria: (1) evidence of modest cognitive decline in at least one of six domains of cognition (memory, perceptual- motor, complex attention, language, executive function and social cognition), and with clinical features indicative of AD, identified with the Montreal Cognitive Assessment (MoCA) score range from 22 to 26; (2) no interference with independence in everyday activities; (3) and no better explanation by other psychiatric disorders. NCD-AD patients fulfill the criteria of NCD and have impaired episodic memory assessed by delayed recall.
- Sleep disturbances are defined as a Pittsburgh Sleep Quality Index (PSQI) total score above 5.
Age in the registry: 60 years to 90 years · Sex: All · Does not accept healthy volunteers
Sites (1)
Sites in registry order. Pick your city on the disease page to sort them by distance.
| Site | City | Country | Site status |
|---|---|---|---|
| The Chinese University of Hong Kong Coordinator of this site? Confirm its status | Hong Kong | Hong Kong SAR China | Unknown status |
This page is information, not medical advice. Discuss any trial with your doctor.