New insight in spiral drawing analysis methods – Application to action tremor quantification

• Published in: Clinical neurophysiology Vol. 128; no. 10; pp. 1823 - 1834
• Main Authors: Legrand, André Pierre, Rivals, Isabelle, Richard, Aliénor, Apartis, Emmanuelle, Roze, Emmanuel, Vidailhet, Marie, Meunier, Sabine, Hainque, Elodie
• Format: Journal Article
• Language: English
• Published: Netherlands Elsevier B.V 01.10.2017; Elsevier
• Subjects: Adult; Aged; Computers, Handheld - standards; Data Analysis, Statistics and Probability; Diagnosis, Computer-Assisted - methods; Diagnosis, Computer-Assisted - standards; Empirical mode decomposition; Essential tremor; Essential Tremor - diagnosis; Essential Tremor - physiopathology; Female; Handwriting; Humans; Male; Middle Aged; Motor Skills - physiology; Physics; Reproducibility of Results; Spiral drawing analysis; Unravelling; Young Adult; Empirical mode decomposition; Spiral drawing analysis; Essential tremor; Unravelling; Spiral drawing analysis Essential tremor Unravelling Empirical mode decomposition

•New methods for computerized spiral analysis are proposed, which outperform the usual velocity method.•They provide new insight into tremor amplitude and frequency variations.•They were implemented on a computer via a digitized tablet. Spiral drawing is one of the standard tests used to assess trem...