Xenos Mason, MD

Assistant Professor of Clinical Neurological Surgery and Neurology

Director, Ambulatory Services

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Overview

Xenos Mason M.D. is a neurologist and movement disorders specialist, with special interest and expertise in the use of Deep Brain Stimulation (DBS) for the treatment of movement disorders. His current research focuses on procedural therapies for movement disorders, in particular DBS. In collaboration with the USC Laboratory for Neuroimaging (LONI), Dr. Mason is studying connectomic biomarkers of DBS efficacy for Dystonia and other movement disorders. He is interested in the development of novel neuroimaging and neurophysiologic biomarkers to improve the delivery of DBS therapy, and on novel treatments for Musician’s Dystonia and other forms of occupational Dystonia. Dr. Mason is also leading development of the multidisciplinary USC Musician’s Neurology Clinic.

Dr. Mason completed his medical training at Harvard Medical School, Massachusetts General Hospital, Brigham and Women’s Hospital, and UCLA. He undertook a research fellowship with the Howard Hughes Medical Institute and training in Clinical/Translational Research with the UCLA-CTSI and SC-CTSI. He joined the USC faculty in the departments of Neurological Surgery and Neurology in 2021.

Education and Training

  • Harvard Medical School, Boston, MA — MD — 04/2015
  • Brigham and Women's Hospital, Boston, MA — 06/2016 — Internship, Internal Medicine
  • Brigham and Women's Hospital, Massachusetts General Hospital, Boston, MA — 06/2019 — Residency, Neurology
  • UCLA, West LA V.A. Medical Center, Los Angeles, CA — 06/2021 — Fellowship, Movement Disorders

Publications

  • Non-ICANS Neurologic Events in Patients With Relapsed/Refractory Multiple Myeloma Treated With Ciltacabtagene Autoleucel: Clinical Presentation and Management in CARTITUDE Studies. Clin Lymphoma Myeloma Leuk. 2026 Jul; 26(7):423-435.e3.. View in PubMed
  • Beta-band desynchronization in the human hippocampus during movement preparation in a delayed reach task. Exp Brain Res. 2025 Jun 23; 243(7):180.. View in PubMed
  • Disparities in the Clinical Provision of Deep Brain Stimulation: A Systematic Scoping Review and Grounded-Theory Qualitative Analysis. Mov Disord Clin Pract. 2025 Oct; 12(10):1463-1489.. View in PubMed
  • Deep brain stimulation access in 2025: geographic, gender, racial, and socioeconomic disparities re-examined. Curr Opin Neurol. 2025 Aug 01; 38(4):330-336.. View in PubMed
  • Beta-band power modulation in the human amygdala during a Direct Reach arm reaching task. Neurosci Res. 2025 Jul; 216:104906.. View in PubMed
  • The ENIGMA-Neuromodulation working group – A mission statement. Brain Stimul. 2025 Mar-Apr; 18(2):142-144.. View in PubMed
  • Case report: Treatment of parkinsonism secondary to ciltacabtagene autoleucel using a combination dopaminergic regimen. Front Immunol. 2024; 15:1444010.. View in PubMed
  • Beta-band power modulation in the human amygdala differentiates between go/no-go responses in an arm-reaching task. J Neural Eng. 2024 07 16; 21(4).. View in PubMed
  • Beta-band power classification of go/no-go arm-reaching responses in the human hippocampus. J Neural Eng. 2024 07 15; 21(4).. View in PubMed
  • Understanding the human conflict processing network: A review of the literature on direct neural recordings during performance of a modified stroop task. Neurosci Res. 2024 Sep; 206:1-19.. View in PubMed