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Background: There are few published data on the prevalence, pattern of anatomic distribution and predictors of various cranial tremors (eg, head, voice, jaw) in essential tremor (ET). Given the high levels of diagnostic misclassification in ET, data on observed clinical patterns would be valuable.

Objectives: To assess the prevalence, pattern of anatomic distribution and predictors of occurrence of cranial tremors in ET.

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Tremor-Dominant Movement Disorder in Associated KBG Syndrome.

Tremor Other Hyperkinet Mov (N Y)

September 2024

Institute of Human Genetics, Technical University of Munich, School of Medicine and Health, Munich, Germany.

Article Synopsis
  • * A case study of a 24-year-old patient revealed they had a significant tremor disorder, including various types of tremors and additional symptoms like muscle stiffness and coordination issues, alongside some developmental delays and epilepsy.
  • * This case underscores the importance of recognizing movement disorders in KBG syndrome, suggesting that genetic testing for pathogenic variants should be considered when diagnosing tremor-related conditions.
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Cross-individual variability is considered the essence of biology, preventing precise mathematical descriptions of biological motion like the physics law of motion. Here we report that the cerebellum shapes motor kinematics by encoding dynamic motor frequencies with remarkable numerical precision and cross-individual uniformity. Using in-vivo electrophysiology and optogenetics in mice, we confirmed that deep cerebellar neurons encoded frequencies via populational tuning of neuronal firing probabilities, creating cerebellar oscillations and motions with matched frequencies.

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Background: Midline Tremor is defined as an isolated or combined tremor that affects the neck, trunk, jaw, tongue, and/or voice and could be part of Essential Tremor (ET), or dystonic tremor. The clinical efficacy of deep brain stimulation for Midline Tremor has been rarely reported. The Ventral Intermediate Nucleus and Globus Pallidus Internus are the preferred targets, but with variable outcomes.

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External Laryngeal Tremor in Adult-Onset Alexander Disease: A Case Report.

Case Rep Neurol

May 2024

Department of Neurology, Hospital Universitario Marqués de Valdecilla (IDIVAL), University of Cantabria, CIBERNED, Santander, Spain.

Introduction: Alexander disease is caused by mutations in , the glial fibrillary acidic protein gene. External laryngeal tremor has not been reported in adult-onset Alexander disease (AOAxD). The aims of this work were to report one such case and to review the literature on palatopharyngeal tremor and AOAxD.

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