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Extraction and reduction of parameters from hand-drawn Archimedes spirals for clinical tremor assessment.
Heliyon
August 2024
Department of Radiation Oncology, The Ohio State University, Columbus, OH, USA.
Background: Patients' hand-drawn Archimedes spirals are widely used in the neurological community to grade tremors. These spirals are either drawn on paper and Xeroxed/scanned into digital images or digitizing tablets are used for the drawings. This process introduces artifacts such as variable widths of the drawn lines with varying pixel grey scale values.
View Article and Find Full Text PDFPallidal Recordings in Chronically Implanted Dystonic Patients: Mitigation of Tremor-Related Artifacts.
Bioengineering (Basel)
April 2023
Department of Neurology, University Hospital of Würzburg and Julius-Maximilian-University Würzburg, 97080 Würzburg, Germany.
Article Synopsis
- * In a study involving eight dystonia patients (five with head tremors), researchers used a device to monitor LFPs and found that head tremors could distort these signals, affecting their reliability as biomarkers.
- * The study showed that using an inertial measurement unit (IMU) was more effective than electromyographic (EMG) methods in identifying and removing tremor-related artifacts from LFP signals, which is crucial for accurate neurostimulation.
Motor Unit-Driven Identification of Pathological Tremor in Electroencephalograms.
Front Neurol
October 2018
Faculty of Electrical Engineering and Computer Science, University of Maribor, Maribor, Slovenia.
Traditional studies on the neural mechanisms of tremor use coherence analysis to investigate the relationship between cortical and muscle activity, measured by electroencephalograms (EEG) and electromyograms (EMG). This methodology is limited by the need of relatively long signal recordings, and it is sensitive to EEG artifacts. Here, we analytically derive and experimentally validate a new method for automatic extraction of the tremor-related EEG component in pathological tremor patients that aims to overcome these limitations.
View Article and Find Full Text PDFTremor-related artefact mimicking ventricular tachycardia.
Resuscitation
June 2005
Intensive Care Unit, Hospital Alarcos. Av. Pio XII s/n., 13002 Ciudad Real, Spain.
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