Bilateral adaptive deep brain stimulation is effective in Parkinson's disease

Area of Science:

• Neuroscience
• Neuromodulation
• Biomedical Engineering

Background:

• Adaptive deep brain stimulation (aDBS) utilizes real-time brain signal feedback to modulate stimulation.
• Previous studies indicated unilateral aDBS benefits Parkinson's disease (PD) motor scores.

Purpose of the Study:

• To evaluate the efficacy of bilateral aDBS in PD patients.
• To assess if aDBS benefits persist with bilateral application and concurrent medication.

Main Methods:

• Bilateral subthalamic nucleus aDBS was applied in 4 PD patients.
• Stimulation was triggered by beta activity amplitude in each hemisphere.
• Motor function was assessed using video-taped Unified Parkinson's Disease Rating Scale (UPDRS) scores.

Main Results:

• UPDRS motor scores improved by 43% with bilateral aDBS compared to no stimulation (p=0.04).
• Significant motor improvements were observed despite a mean stimulation time of only 45%.
• Levodopa was well-tolerated and further reduced the required stimulation time.

Conclusions:

• Bilateral aDBS effectively improves both limb and axial motor symptoms in Parkinson's disease.
• This adaptive approach can dynamically adjust stimulation needs based on medication status.