Adaptive deep brain stimulation for Parkinson's disease using motor cortex sensing

• Authors: Nicole C. Swann, University of California; Coralie de Hemptinne, University of California; Margaret C. Thompson, University of Washington; Svjetlana Miocinovic, Emory University; Andrew M. Miller, University of California; Ro'ee Gilron, University of California; Jill L. Ostrem, University of California; Howard J. Chizeck, University of Washington; Philip A. Starr, University of California
• Journal Title: Journal of Neural Engineering
• Volume: Volume 15, Number 4
• Publisher: IOP Publishing: Hybrid Open Access | 2018-08-01, Pages 046006-046006
• Type of Work: Article | Post-print: After Peer Review
• Publisher DOI: http://doi.org/10.1088/1741-2552/aabc9b
• Subjects: Biology, Neuroscience; Engineering, Biomedical
• Keywords: Science & Technology; Technology; Life Sciences & Biomedicine; Engineering, Biomedical; Neurosciences; Engineering; Neurosciences & Neurology; Parkinson's disease; deep brain stimulation; motor cortex; dyskinesia; adaptive DBS; activa PC plus S; SUBTHALAMIC NUCLEUS; MOVEMENT-DISORDERS; PERFORMANCE; IMPROVEMENT; TRIAL

Abstract

Objective. Contemporary deep brain stimulation (DBS) for Parkinson's disease is delivered continuously, and adjustments based on patient's changing symptoms must be made manually by a trained clinician. Patients may be subjected to energy intensive settings at times when they are not needed, possibly resulting in stimulation-induced adverse effects, such as dyskinesia. One solution is 'adaptive' DBS, in which stimulation is modified in real time based on neural signals that co-vary with the severity of motor signs or of stimulation-induced adverse effects. Here we show the feasibility of adaptive DBS using a fully implanted neural prosthesis. Approach. We demonstrate adaptive deep brain stimulation in two patients with Parkinson's disease using a fully implanted neural prosthesis that is enabled to utilize brain sensing to control stimulation amplitude (Activa PC + S). We used a cortical narrowband gamma (60-90 Hz) oscillation related to dyskinesia to decrease stimulation voltage when gamma oscillatory activity is high (indicating dyskinesia) and increase stimulation voltage when it is low. Main results. We demonstrate the feasibility of 'adaptive deep brain stimulation' in two patients with Parkinson's disease. In short term in-clinic testing, energy savings were substantial (38%-45%), and therapeutic efficacy was maintained. Significance. This is the first demonstration of adaptive DBS in Parkinson's disease using a fully implanted device and neural sensing. Our approach is distinct from other strategies utilizing basal ganglia signals for feedback control.