The Efficacy of High-Frequency Repetitive Transcranial Magnetic Stimulation for Improving Apathy in Chronic Stroke Patients.
Nobuyuki Sasaki, Takatoshi Hara, Naoki Yamada...
https://pubmed.ncbi.nlm.nih.gov/28578330/Actively Recruiting
Led by Medical University of South Carolina · Updated on 2026-07-08
40
Participants Needed
1
Research Sites
N/A
Total Duration
Apathy, characterized by loss of motivation and withdrawal from activities, is common after stroke and significantly affects quality of life for survivors and their caregivers. This study investigates whether a new, accelerated form of repetitive transcranial magnetic stimulation rTMS targeting the medial prefrontal cortex mPFC can be safe and helpful for people experiencing apathy after stroke. The trial is a double-blind, randomized controlled phase III study focusing on improving apathy symptoms in chronic stroke survivors. Participants will be randomly assigned to receive either active accelerated intermittent theta burst stimulation iTBS rTMS targeting the left dorsal medial prefrontal cortex or a sham stimulation. The active treatment involves high-dose rTMS delivered in 12 sessions per day over six treatment days within two weeks, totaling 43,200 pulses. Sham treatment mimics the active procedure without delivering therapeutic stimulation. Brain imaging with MRI will help guide treatment targeting and will be performed before and immediately after the treatment period. During the study, participants will undergo clinical assessments at baseline, immediately after treatment, and one month post-treatment to measure changes in apathy symptoms, cognition, depression, and treatment acceptability. Researchers will monitor safety through treatment-emergent adverse events after each session. The primary outcome is the change in apathy measured by the Lille Apathy Rating Scale and the Apathy Evaluation Scale. The total participation duration includes treatment over two weeks and follow-up assessments up to one month post-treatment.
CONDITIONS
Accelerated rTMS vs. Sham for Stroke Apathy
P
Parneet Grewal, MD
L
Lisa McTeague, PhD
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Medical University of South Carolina
Lead Sponsor
This table compares participation in this trial with other options available for this condition. The information is drawn from published research and the trial’s study details and is provided for educational purposes only.
| Factors | High-Dose iTBS-rTMS (MagVenture MagPro, Active) | Sham TMS (MagVenture MagPro, Sham) |
|---|---|---|
| What it is | High-dose intermittent theta burst repetitive transcranial magnetic stimulation (iTBS-rTMS) delivered with the MagVenture MagPro device to the left dorsomedial prefrontal cortex (dmPFC) in adults with chronic stroke-related apathy. | Sham transcranial magnetic stimulation mimicking active TMS appearance and sound, delivered with the same MagVenture MagPro device, with participant, caregiver, and technician masking. |
| Role in trial | Investigational treatment arm designed to test whether high-dose iTBS-rTMS improves apathy symptoms post-stroke. | Comparator arm used to rigorously assess active treatment effects by controlling for placebo and nonspecific stimulation factors. |
| Primary use | To test whether high-dose rTMS improves apathy symptoms and cognitive outcomes in adults with chronic stroke. | To provide a rigorous control, enabling evaluation of the true effects of active TMS on apathy and cognition. |
| How it is given or performed | Delivered as 12 daily sessions of 600 pulses each targeting left dmPFC, separated by short breaks, totaling 43,200 pulses over 6 days, using neuronavigation to ensure precise targeting. | Delivered using the same session structure as active TMS, matching sound and appearance, with sham titration and random coil selection ensuring masking. |
| Evidence status | Ongoing clinical investigation in NCT07113067; prior studies report some improvement in post-stroke apathy from high-frequency rTMS, but evidence is limited and not yet definitive. | Used primarily as a control; no therapeutic efficacy is expected based on sham stimulation in current literature. |
| Important limitations | Effectiveness of high-dose iTBS-rTMS for stroke apathy is still under investigation; prior literature is limited and population sizes have been small. Trial exclusion criteria may limit generalizability to those with certain neurological or psychiatric comorbidities. | As a simulated treatment, sham TMS does not improve apathy or cognition and may not account for all psychological or nonspecific effects. |
Disclaimer: This comparison is created with the help of artificial intelligence(AI) and may contain errors or missing information. It is not medical advice and does not mean one option is better or safer than another. Clinical trials are still being studied, and joining a trial is your choice. Please consult your healthcare professional before making any decisions.
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Duration - 2 to 4 weeks
Participants are screened for eligibility to participate in the trial.
1 visit (in-person)
Duration - 2 weeks
Participants receive either active accelerated rTMS targeting the brain or a sham treatment with no stimulation. Treatments occur over six days within two weeks, with multiple sessions each day.
6 treatment days with multiple sessions per day
Duration - 1 month
Participants undergo clinical assessments immediately after treatment and one month later to evaluate changes in apathy and cognitive function. MRI scans are also performed before and after treatment.
2 follow-up visits
Study Type
INTERVENTIONAL
Masking
TRIPLE
Allocation
RANDOMIZED
Model
PARALLEL
Primary Purpose
TREATMENT
Number of Arms
2
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Lead Sponsor