Accelerometry in Diagnosis of Functional Tremor
- Authors: Evdokimov K.M.1, Ivanova E.O.1, Brutyan A.G.1, Fedotova E.Y.1, Illarioshkin S.N.1
-
Affiliations:
- Research Center of Neurology
- Issue: Vol 18, No 4 (2024)
- Pages: 5-11
- Section: Original articles
- URL: https://ogarev-online.ru/2075-5473/article/view/282499
- DOI: https://doi.org/10.17816/ACEN.1144
- ID: 282499
Cite item
Abstract
Introduction. Functional tremor (FT) is the most common phenotype of functional movement disorders. Electrophysiological assessment is included in the diagnostic criteria for tremor; however, there is currently no consensus criteria for the differential diagnosis of FT.
The objective of this study was to evaluate the utility of tremor frequency characteristics derived from accelerometry for the differential diagnosis between FT and organic tremor (OT).
Materials and methods. Nineteen patients with FT, 20 patients with essential tremor, and 20 patients with Parkinson's disease were enrolled in the study and underwent electrophysiological examination with a two-channel accelerometer and subsequent data processing.
Results. The study results revealed the differences in the frequency peak widths in patients with FT and OT, predominantly while performing a cognitive load task. This criterion showed a high sensitivity (100%) and a high specificity (97.5%) for the diagnosis of FT in the study population.
Conclusion. Tremor characteristics recorded during accelerometry combined with cognitive load task can serve as an additional testing aid for differential diagnosis between functional and organic tremor.
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##article.viewOnOriginalSite##About the authors
Konstantin M. Evdokimov
Research Center of Neurology
Author for correspondence.
Email: evdokimov@neurology.ru
ORCID iD: 0000-0001-6217-4151
postgraduate student, neurologist, 5th Neurology department, Institute of Clinical and Preventive Neurology
Russian Federation, MoscowEkaterina O. Ivanova
Research Center of Neurology
Email: evdokimov@neurology.ru
ORCID iD: 0000-0003-3337-1759
Cand. Sci. (Med.), researcher, neurologist, 5th Neurology department, Institute of Clinical and Preventive Neurology
Russian Federation, MoscowAmayak G. Brutyan
Research Center of Neurology
Email: evdokimov@neurology.ru
ORCID iD: 0000-0002-6381-2925
Cand. Sci. (Med.), Head, Laboratory of clinical neurophysiology, Institute of Clinical and Preventive Neurology
Russian Federation, MoscowEkaterina Y. Fedotova
Research Center of Neurology
Email: evdokimov@neurology.ru
ORCID iD: 0000-0001-8070-7644
D. Sci. (Med.), leading researcher, Head, 5th Neurology department, Institute of Clinical and Preventive Neurology
Russian Federation, MoscowSergey N. Illarioshkin
Research Center of Neurology
Email: evdokimov@neurology.ru
ORCID iD: 0000-0002-2704-6282
D. Sci. (Med.), prof., RAS Full Member, Director, Brain Institute, Deputy director
Russian Federation, MoscowReferences
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