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Long-term motor learning in focal hand dystonia.
Clin Neurophysiol
December 2024
Human Motor Control Section, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Bethesda, MD 20892, USA. Electronic address:
Objective: Because focal hand dystonia usually occurs in the over-learned stage, it would be valuable to know long-term motor learning characteristics and underlying pathophysiological features that might predispose to dystonia.
Methods: We conducted a case-control exploratory study of 15 visits over 12 weeks in the non-affected hand of a 4-finger sequence of 8 key presses in eight patients with FHD compared with eight age- and sex-matched, healthy volunteers (HVs). We studied the behavioral data and the physiological changes of the brain, including motor cortical excitability and cortical oscillations.
Structural and functional brain alterations in laryngeal dystonia: A coordinate-based activation likelihood estimation meta-analysis.
Hum Brain Mapp
October 2024
Department of Otolaryngology-Head and Neck Surgery, Massachusetts Eye and Ear and Harvard Medical School, Boston, Massachusetts, USA.
Laryngeal dystonia (LD) is an isolated, task-specific, focal dystonia characterized by intermittent spasms of laryngeal muscles impairing speech production. Although recent studies have demonstrated neural alterations in LD, the consistency of findings across studies is not well-established, limiting their translational applicability. We conducted a systematic literature search to identify studies reporting stereotactic coordinates of peak structural and functional abnormalities in LD patients compared to healthy controls, followed by a coordinate-based activation likelihood estimation meta-analysis.
View Article and Find Full Text PDFTask-specific facial dystonia following COVID-19 infection: A case report.
Medicine (Baltimore)
September 2024
Department of Neurology, School of Medicine, Kyungpook National University, Daegu, Korea.
Rationale: During the coronavirus disease of 2019 (COVID-19) pandemic, various movement disorders associated with COVID-19 infection have been reported. However, the incidence of dystonia specifically associated with COVID-19 infection has been particularly rare.
Patient Concerns: A 43-year-old male patient presented to the movement disorders clinic with complaints of facial grimacing while chewing and experiencing spasms during nasal breathing.
Golfer's Dystonia Successfully Treated with Ventro-Oral Thalamotomy.
Mov Disord Clin Pract
November 2024
Department of Neurosurgery, Tokyo Women's Medical University, Tokyo, Japan.
Stress in Musicians with and Without Focal Dystonia Is Not Reflected in Limbic Circuit Activation.
Mov Disord
November 2024
Department of Musicians' Health, University of Music Lübeck, Lübeck, Germany.
Background: Musicians' dystonia (MD) is a movement disorder with several established risk factors, but the exact pathophysiology remains unknown. Recent research suggests dysfunction in sensory-motor, basal ganglia, cerebellar, and limbic loops as potential causes. Adverse childhood experiences are also considered risk factors.
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