Roopa Rajan, Reghu Anandapadmanabhan, Aayushi Vishnoi, Anna Latorre, Nivethida Thirugnanasambandam, Alish Dipani, Deblina Biswas, Divya M Radhakrishnan, Achal Srivastava, Kailash P Bhatia
BACKGROUND: The merits of classifying the heterogeneous group of essential tremors into essential tremor (ET) and essential tremor plus (ETP) are debated. OBJECTIVES: We studied the electrophysiological and spiral characteristics of tremor in ET and ETP. METHODS: We reviewed standardized videos from a tremor database and clinically classified patients into ET, ETP, or dystonic tremor (DT). The following variables were derived from combined tri-axial accelerometry-surface electromyography (EMG)-peak frequency, total power, peak power, full width half maximum, tremor stability index and EMG-coherence...
February 2024: Movement Disorders Clinical Practice