Post Concussion Syndrome Clinical Trial
Official title:
Image-guided, Accelerated, Theta-burst Stimulation for the Treatment of Post-concussion Syndrome
TMS has been safely and reliably delivered at the Harquail Centre for over 5 years, with a primary focus on conventional rTMS protocols for treatment-resistant depression. Recently, the investgator team has gained the capability to deliver sham-controlled intermittent theta-burst stimulation (iTBS) rTMS. Unlike conventional high frequency rTMS, which was used in the previous sham-controlled rTMS PCS pilot study, iTBS is a patterned form of stimulation that recapitulates endogenous activity patterns of neural circuits pairing gamma frequency (50Hz) burst pulses coupled in a theta frequency rhythm (5Hz).12 iTBS delivers 600 pulses in just over 3 minutes with similar or greater effects on neural plasticity compared to conventional rTMS (taking over 30-45 minutes) and similar tolerability and efficacy in trials of depression. Furthermore, novel accelerated iTBS protocols stimulating the left dorsolateral prefrontal cortex (dlPFC) over 8-10 treatments, 50 minutes apart over a 5 day interval has recently demonstrated robust efficacy in depression and received recent FDA approval. Thus, accelerated iTBS can be delivered in a single week of treatment compared to 6 weeks with conventional rTMS methods. Finally, the investigators recently acquired the technology to integrate MRI neuroimage-guided stimulation, which would allow to target specific brain regions/networks implicated in PCS at high spatial resolution. No studies to date have investigated image-guided accelerated iTBS rTMS for the treatment of PCS.
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