Assessment of Head Tremor with Accelerometers Versus Gyroscopic Transducers
Open accessAbstract
Background: Accelerometers and gyroscopes are used commonly in the assessment of hand tremor, but their validity in the assessment of head tremor has not been studied. We hypothesized that gyroscopy would be superior to accelerometry because head tremor is rotational motion, and gyroscopes record rotational motion, free of gravitational artifact. We also hypothesized a strong logarithmic relationship between 0 to 4‐point tremor ratings and the transducer measures of tremor amplitude, similar to those previously reported for hand tremor. Methods: Head tremor was recorded for 1 minute in each of the five head positions used in the Essential Tremor Rating Assessment Scale, using a triaxial accelerometer and triaxial gyroscope mounted at the vertex of the head. Mean and maximum 3‐second burst displacement tremor and rotation tremor were computed by spectral analysis. The minimum detectable change for the transducers was estimated using the residual mean squared error from repeated‐measures analysis of variance. Results: Tremor displacement and rotation (T) were logarithmically related to tremor ratings (tremor rating score; TRS): log(T) = α TRS + β, where α ≈ 0.47 for displacement and ≈0.64 for rotation, and β ≈ −1.8 and −1.4. Tremor ratings correlated more strongly with gyroscopy (r = 0.83–0.87) than with accelerometry (r = 0.71–0.75). Minimum detectable change (percent reduction) was approximately 66% of the baseline geometric mean. Conclusions: Gyroscopic transducers are superior to accelerometry for assessment of head tremor. Both measures of head tremor are logarithmically related to tremor ratings. The minimum detectable change of the transducer measures is comparable to those previously reported for hand tremor.
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There is an unmet need for a reliable, adaptable, and generalizable processing framework that can be directly translated to clinical settings for estimation, extraction, and prediction of action tremor with high spectrotemporal resolution.
“Despite the crucial need for PHT elimination techniques and the numerous research advancements on this topic51–55, including our previous work13,14, there is an unmet need for a reliable, adaptable, and generalizable processing framework that can be directly translated to clinical settings for estimation, extraction, and prediction of action tremor with high spectrotemporal resolution.”
From PHTNet: Characterization and Deep Mining of Involuntary Pathological Hand Tremor using Recurrent Neural Network Models (2020) · cites this paper as [55]
The citation is attached to the statement about advances in PHT elimination, not directly to the citing authors’ conclusion that a generalizable framework is needed. The cited paper’s Methods and Discussion describe measuring head tremor with accelerometers and gyroscopes; the passages found for elimination techniques and action-tremor processing do not address PHT elimination or the stated framework need. (LLM, conf=0.74)
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“Despite the crucial need for PHT elimination techniques and the numerous research advancements on this topic 51–55 , including our previous work 13,14 , there is an unmet need for a reliable, adaptable, and generalizable processing framework that can be directly translated to clinical settings for…”
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- Authors
- Elble, R. J., Hellriegel, H., Raethjen, J., & Deuschl, G.
- Affiliations
- SIU Medicine (US)
- Christian-Albrechts-Universität zu Kiel (DE)
- Corresponding author
- Elble, Rodger J.
- Venue
- Movement Disorders Clinical Practice
- Publisher
- Wiley
- Published
- 2016-07-08
- Volume
- 4
- Issue
- 2
- Pages
- 205-211
- ISSN
- 2330-1619 (ISSN-L)
- PMC
- PMC6174406
- OpenAlex
- W2474687114
- Cited by
- 35
- References
- 21
- Citations by year
- 2026: 3 · 2025: 1 · 2024: 4 · 2023: 6 · 2022: 7 · 2021: 3 · 2020: 1 · 2019: 4 · 2018: 4 · 2017: 1 · 2016: 1
- FWCI
- 2.51
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Movement Disorders Clinical Practice (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- Funders
- German Research Council (SFB 855)
- Spastic Paralysis Research Foundation of Kiwanis International
- Topics
- Health Sciences › Medicine › Neurology › Neurological disorders and treatments
- Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
- Life Sciences › Neuroscience › Neurology › Vestibular and auditory disorders
- Keywords
- head tremor, essential tremor, accelerometry, gyroscope, rotational motion, minimal detectable change, tremor amplitude, measurement validity
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