Intermittent Theta-Burst Stimulation for Stroke: Primary Motor Cortex Versus Cerebellar Stimulation: A Randomized...

Area of Science:

• Neuroscience
• Rehabilitation Medicine
• Clinical Trials

Background:

• Stroke survivors often experience impaired balance and motor function, leading to poor functional outcomes.
• The cerebellum and primary motor cortex (M1) are potential neuromodulation targets for post-stroke recovery.
• This study investigated the efficacy of intermittent theta-burst stimulation (iTBS) on these areas.

Purpose of the Study:

• To compare the effectiveness and safety of cerebellar iTBS versus M1 iTBS for balance and motor recovery in stroke patients.
• To evaluate the impact of iTBS on cortical excitability.

Main Methods:

• A randomized, double-blind, sham-controlled trial involving 36 subacute stroke patients.
• Three groups received M1-iTBS, cerebellar-iTBS, or sham-iTBS over 15 sessions (3 weeks).
• Outcomes including balance (Berg balance scale) and motor function (Fugl-Meyer assessment) were assessed pre-intervention, weekly, and post-intervention.

Main Results:

• Both M1-iTBS and cerebellar-iTBS significantly improved balance scores compared to sham-iTBS.
• Cerebellar-iTBS demonstrated superior improvement in lower extremity motor function compared to M1-iTBS and sham-iTBS.
• iTBS interventions increased motor-evoked potential amplitudes in both targeted areas.

Conclusions:

• Both M1- and cerebellar-iTBS are effective in improving balance post-stroke.
• Cerebellar-iTBS shows significant benefits for motor recovery, unlike M1-iTBS.
• Cerebellar-iTBS presents a promising therapeutic option for stroke rehabilitation programs.