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Zapping the brain to boost memory and sleep in seniors

NCT ID NCT07433738

Symptom relief Sponsor: Chinese University of Hong Kong Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting This study
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 25, 2026 · Last updated Jun 27, 2026 · Updated 2 times

Summary

This study tests a gentle, non-invasive brain stimulation technique called so-tDCS in 80 older adults who have mild memory and sleep complaints. Participants will receive either real or sham stimulation over 4 weeks. Researchers will track changes in memory, sleep quality, and brain health markers to see if this approach can help.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
High-definition slow-oscillatory transcranial direct current stimulation (so-tDCS) – a gentle, non-invasive brain stimulation device
What this could lead to
If it works, this could offer a safe, non-drug way to ease memory and sleep problems in older adults, potentially slowing cognitive decline.
What could go wrong
This is an early-stage trial with only 80 participants, so results may not apply to everyone. The effect may be small or temporary, and individual responses vary.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Phase

Not a phased trial

Phase numbers describe drug development. The registry uses this when they do not apply, as it does for trials of devices, procedures or behaviour changes, and for observational studies.

Participants

About 80 people

The number the study aims to enrol. It can still change while the study runs.

Expected to start

May 2026

An estimate. Start dates often move.

Expected to finish

Nov 2028

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Ages

60 to 80 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * Chinese, right-handed, aged from 60 to 85 years. * Normal global cognition defined as a total score of the Montreal Cognitive Assessment Hong Kong version (HK MoCA) \> 26. * Subjective cognitive decline (SCD) is evaluated by a 10-item questionnaire that covers subjective cognitive complaints (SCC) in the core cognitive domains. * Sleep disturbances or poor sleep quality is assessed and defined with a total score of the Pittsburgh Sleep Quality Index (PSQI) greater than 5. Exclusion Criteria: * Previous diagnosis of age-related neurodegenerative diseases, such as Alzheimer's disease, Parkinson disease. * History of neurological diseases including brain tumor, and stroke. * History of psychiatric disorders including schizophrenia and depression. * Presence of positive neurological diseases, such as stroke, brain tumor, dementia. * Physically unable to attend the sessions of intervention. * Currently enrolled in another intervention study. * Currently taking a psychiatric or other medication that may affect sleep quality and cognition.

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Conditions

The condition(s) this trial relates to.

sleep disorder subjective cognitive decline

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Sleep Subjective cognitive complaints (SCCS)

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    1 site. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • Tai Po Hospital

    Hong Kong, Hong Kong

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