About this trial
Deep transcranial magnetic stimulation (dTMS) is a brain stimulation technique that involves generating a brief magnetic field in a coil that is placed on the scalp. The magnetic field passes through the skull and induces a weak electrical current in the brain that briefly activates neural circuits at the stimulation site. The Brainsway dTMS H7-Coil is able to target an area of the brain that has been shown in studies to be linked to greater resilience to cognitive decline. In this study, the investigators will combine dTMS with cognitive training in older adults with subjective cognitive decline (SCD) and examine the effect of this treatment on memory, other cognitive abilities, and mood. In addition, the investigators will examine the combined effects of dTMS and cognitive training on brain activity as measured using electroencephalography (EEG).
Approximately 30 older adults from ages 55 to 70 with SCD and a positive family history of Alzheimer's disease will be enrolled in this study.
Eligibility criteria
This trial does not accept healthy volunteersQualifiers
have a family history of late onset sporadic Alzheimer's disease (AD) as defined by having a first degree relative, living or deceased, with a probable or confirmed diagnosis of AD
have subjective memory decline and concern about memory changes
score 26 or higher on the Montreal Cognitive Assessment (MoCA)
are willing to provide informed consent
Disqualifiers
have a metal plate in their head, except in the mouth (such as an ear implant, implanted brain stimulators, aneurysm clips)
have known increased pressure or a history of increased pressure in their brain, which may increase their risk for having seizures
have a cardiac pacemaker
have an implanted medication pump
Trial design
Crossover
Treatments tested in this trial
Active Brainsway H7-Coil Deep TMS System
DeviceDeep Transcranial Magnetic Stimulation (dTMS) is a new form of TMS which allows direct stimulation of deeper neuronal pathways than the standard TMS. The H-coil is a novel dTMS coil designed to allow deeper brain stimulation without a significant increase of electric fields induced in superficial cortical regions. dTMS will be administered daily for 4 consecutive weeks.
Sham Brainsway H7-Coil Deep TMS System
DeviceIn addition to the active H-coil, a sham coil is included in the system. The active and sham coils are connected to a control switch, which alternates between real and sham operation modes. The sham treatment will be administered daily for 4 consecutive weeks.
Cognitive Training
Other interventionCognitive training will be conducted using the BrainHQ software program.
Treatment groups
Trial outcomes
Primary outcomes
Percentage of scheduled treatment sessions that are attended by study participants
There are in total 20 sessions of dTMS intervention and 20 sessions of sham stimulation.
Secondary outcomes
Change in baseline memory performance on a neuropsychological battery
Memory score from the neuropsychological battery at baseline will be compared to 4 weeks of intervention and at 1-month follow-up.
Change in executive function performance on a neuropsychological battery
Executive function scores from the neuropsychological battery at baseline will be compared to 4 weeks of intervention and at 1-month follow-up.
Change in baseline in scores on the Geriatric Depression Scale (GDS).
GDS is a 15-item self-report scale that measures an elderly individual's mood. A score greater than 5 suggests that the individual may be depressed. Administration time is approximately 5 minutes. The scores at baseline will be compared to 4 weeks of intervention and at 1-month follow-up.
Change in baseline in scores on the Geriatric Anxiety Inventory (GAI).
The GAI is a 20-item self-report measure of anxiety developed for older adults. Administration time is approximately 5 minutes. The scores at baseline will be compared to 4 weeks of intervention and at 1-month follow-up.
Sponsors and contacts
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Rotman Research Institute at Baycrest
Lead sponsor
Brainsway
Collaborator
Centre for Addiction and Mental Health
Collaborator