Parkinson Disease Clinical Trial
Official title:
Effects of Deep Brain Stimulation (DBS) of the Pedunculopontine Nucleus (PPN) on Gait, Postural Stability, Freezing of Gait (FOG), and Falls
This is a mechanistic study to determine the differential effects of the dopaminergic and cholinergic systems on attention, gait, and balance. The primary goal of the study is to evaluate the relative effects of pedunculopontine nucleus (PPN) and subthalamic nucleus (STN) Deep Brain Stimulation (DBS) on these features in persons with Parkinson's Disease (PD) who are eligible for DBS for improvement of their motor symptoms and exhibit gait instability with falls. Patients will be enrolled and implanted with bilateral electrodes in one of the approved DBS locations (subthalamic nucleus: STN), but additionally electrodes will be inserted into the experimental target, namely the PPN bilaterally.
This is a prospective, single-center randomized controlled trial designed to estimate the potential clinical benefit, and associated risks, of deep brain stimulation of the of the PPN and STN in patients with PD that are candidates for DBS for improvement of their motor symptoms and exhibit gait instability with falls. Patients will be enrolled and implanted with additional bilateral electrodes in the PPN. Each subject will be randomized 1:1 to one of the following sequences: Bilateral STN+PPN stimulation or Bilateral STN stimulation alone. The addition of a bilateral STN stimulation only group allows for the research of potential micro-lesioning effects of the PPN which might affect features of interest even in the absence of PPN stimulation. ;
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