Overview
Current clinical research interests include clinical trials regarding adaptive or closed-loop deep brain stimulation with novel devices, cellular, and gene therapy in Parkinson disease. Additional trials have included gene therapy for Alzheimer's disease and sensory restoration for development of brain machine interfaces. Clinical treatments include deep brain stimulation, which is now a common procedure for treating Parkinson disease and tremor. Translational approaches include testing new devices and stimulation patterns in the operating room. Pre-clinical research interests focus on evaluation of cerebral perfusion and metabolism changes with stroke, aging and Alzheimer's disease, using both in vivo and in vitro approaches. These basic science interests include new approaches to cerebral blood flow enhancement with brain stimulation, optical imaging of the brain, cellular understanding of metabolism using direct substrate recordings (ie, oxygen, glucose, lactate, respirometry) and developing new methods to understand neurovascular coupling, analyzing complex interactions between neurons, astrocytes and blood vessels. Further interests include changes in cerebral blood flow with stroke and enhanced recovery after stroke.
Current Duke Appointments & Affiliations
Professor of Neurosurgery
·
1999 - Present
Neurosurgery,
Neurosurgery
Professor of Neurobiology
·
1999 - Present
Neurobiology,
Basic Science Departments
Professor in Orthopaedic Surgery
·
2017 - Present
Orthopaedic Surgery,
Clinical Science Departments
Professor of Biomedical Engineering
·
2018 - Present
Biomedical Engineering,
Pratt School of Engineering
Faculty Network Member of the Duke Institute for Brain Sciences
·
2019 - Present
Duke Institute for Brain Sciences,
University Institutes and Centers
Recent Scholarly Works
Noninvasive whole-brain imaging of glymphatic dynamics.
Journal article Sci Adv · June 19, 2026 Cerebrospinal fluid circulation through the glymphatic system plays a crucial role in removing metabolic waste from the central nervous system. However, the mechanism underlying the brain-wide glymphatic dynamics is not yet fully understood, in part due to ... Full text Link to item CiteDysregulated microvascular reactivity in hippocampus and cortex in CVN Alzheimer's disease mouse model.
Journal article J Cereb Blood Flow Metab · April 2026 Microvascular reactivity in acute cortical and hippocampal brain slices and hippocampal synaptic- evoked cerebral blood flow (CBF) in vivo were analyzed in a mouse model of Alzheimer's disease (AD, CVN). Microvessels underwent initial vasoconstriction (2 µ ... Full text Link to item CiteContinuous Accelerometry-Based Tremor Detection During Daily Living.
Journal article Sensors (Basel) · February 26, 2026 As a step towards advancing adaptive DBS control for Parkinson's disease, we have developed an automated algorithm that detects tremor continuously on a seconds-resolution time scale from a wearable accelerometer and present the feasibility study test resu ... Full text Link to item CiteRecent Grants
A Double-Blind, Randomized, Controlled Trial of Epidural Conus Medullaris Stimulation to Alleviate Pain and Augment Rehabilitation in Patients with Subacute Thoracic Spinal Cord Injury (SCI)
ResearchInvestigator · Awarded by National Institutes of Health · 2020 - 2027Accurate, low-cost, trackerless neuronavigation for transcranial magnetic stimulation
ResearchAdvisor · Awarded by National Institute of Mental Health · 2022 - 2027Hypoperfusion, Hemodynamic Control Domains and Neurovascular Dysregulation in AD brain pathology
ResearchPrincipal Investigator · Awarded by National Institute on Aging · 2023 - 2027View All Grants
Education
Indiana University, School of Medicine ·
1975
M.D.
Indiana University at Bloomington ·
1973
M.A.
Indiana University at Bloomington ·
1971
B.A.