At a glance
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Effects and Mechanisms of Non-invasive Deep Brain Stimulation in Patients With Parkinson's Disease
In Brief
A clinical study evaluating Transcranial Temporal Interference Stimulation (TIS) for Parkinson's Disease. Completed, enrolled 37 participants across 1 site.
Detailed Summary
The goal of this clinical trial is to learn whether a type of brain stimulation called transcranial temporal interference stimulation (TIS) of the internal globus pallidus (GPi) can help improve movement symptoms in people with Parkinson's disease. The study will also look at how TIS changes brain activity related to these improvements. The main questions this study aims to answer are: * How much can repeated TIS sessions improve movement symptoms in people with Parkinson's disease? * Can these improvements last for up to two months after the treatment ends? * What changes in brain activity happen along with the improvements? Researchers will compare people who receive active TIS with those who receive sham (placebo-like) stimulation to see whether active TIS leads to better movement outcomes. Participants will: * Receive 10 sessions of active or sham TIS over two weeks * Complete movement assessments during the two-week treatment and again 2, 4, and 8 weeks afterward * Complete brain activity assessments before and after the two-week treatment
Study Details
Timeline
Arms & Interventions
Participants in this arm will receive active transcranial temporal interference stimulation targeting the internal globus pallidus over a two-week intervention period.
Participants in this arm will receive sham transcranial temporal interference stimulation using the same electrode placement and experimental setup as the active intervention. However, both electrode pairs delivered currents at 2000 Hz without a frequency offset, resulting in a flat interference envelope while maintaining similar scalp sensations. The sham procedure consists of 10 sessions delivered over a two-week period, without therapeutic stimulation.
Interventions
Transcranial temporal interference stimulation (TIS) is a noninvasive brain stimulation technique that delivers two high-frequency alternating currents through scalp electrodes to generate a low-frequency interference field in deep brain regions. In this study, TIS targets the internal globus pallidus (GPi) to modulate neural activity in people with Parkinson's disease. Participants receive 10 stimulation sessions over two weeks. The sham TIS condition uses the same setup but applies low-frequency currents without generating an interference pattern.