A 68-year-old man who had been diagnosed with PD for 11 years was unilaterally implanted with a Medtronic 3389 electrode in the left GP and a Medtronic Activa PC + S sensing pulse generator (Afshar et al., 2013 (link)). His OFF-meds MDS-Unified Parkinson’s Disease Rating Scale (MDS-UPDRS) III motor score (Goetz et al., 2008 (link)) was 50 and freezing of gait questionnaire (Nieuwboer et al., 2009 (link)) score was 13. His levodopa daily equivalent dosage was 1,025 mg (Tomlinson et al., 2010 (link)). He gave informed consent and the protocol was approved by the University of Minnesota Institutional Review Board.
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