The Role of Posture, Magnification, and Grip Force on Microscopic Accuracy
Abstract
While tremor has been studied extensively, the investigations thus far do not give detailed information on how the accuracy necessary for micromanipulations is affected while performing tasks in microsurgery and the life sciences. This paper systematically studies the effects of visual feedback, posture and grip force on the trial error and tremor intensity of subjects holding a forceps-like object to perform a pointing task. Results indicate that: (i) Arm support improves accuracy in tasks requiring fine manipulation and reduces tremor intensity in the 2-8 Hz region, but hand support does not provide the same effect; hence freedom of wrist movement can be retained without a significant increase in trial error. (ii) Magnification of up to x10 is critical to carry out accurate micromanipulations, but beyond that level, magnification is not the most important factor. (iii) While an appropriate grip force must be learned in order to grasp micro-objects, such as a needle, without damaging them, the level of grip force applied does not affect the endpoint accuracy.
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For circular signals, WL-QLMS reduces to QLMS, and QLMS converges faster than WL-QLMS.
“Importantly, for circular signals WL-QLMS reduces to QLMS [44] and QLMS converges faster than WL-QLMS [45].”
From A Quaternion Weighted Fourier Linear Combiner for Modeling Physiological Tremor (2016) · cites this paper as [44]
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- Authors
- Safwat, B., Su, E. L. M., Gassert, R., Teo, C. L., & Burdet, E.
- Affiliations
- Imperial College London (GB)
- National University of Singapore (SG)
- Corresponding author
- Burdet, Etienne
- Venue
- Annals of Biomedical Engineering
- Published
- 2009-03-11
- Volume
- 37
- Issue
- 5
- Pages
- 997-1006
- ISSN
- 0090-6964 (ISSN-L)
- 1573-9686
- OpenAlex
- W2170090241
- Cited by
- 42
- References
- 36
- Citations by year
- 2026: 1 · 2025: 3 · 2022: 1 · 2021: 1 · 2020: 3 · 2019: 3 · 2018: 2 · 2017: 2 · 2016: 4 · 2015: 8 · 2014: 1 · 2013: 2 · 2012: 4
- FWCI
- 1.77
- Type
- journal article
- Language
- en
- Open access
- closed
- Licence
- www.springer.com/tdm (tdm)
- Locations
- Annals of Biomedical Engineering (publishedVersion)
- PubMed (publishedVersion)
- National University of Singapore (submittedVersion)
- Funders
- Universiti Teknologi Malaysia
- Topics
- Life Sciences › Neuroscience › Cognitive Neuroscience › Motor Control and Adaptation
- Health Sciences › Medicine › Surgery › Surgical Simulation and Training
- Social Sciences › Psychology › Social Psychology › Ergonomics and Musculoskeletal Disorders
- Keywords
- tremor, microsurgery, micromanipulation, posture, arm support, hand support, magnification, grip force, endpoint accuracy, visual feedback, fine manipulation, pointing task, micro-objects
- MeSH terms
- Adult, Biomechanical Phenomena, Fatigue, Feedback, Humans, Male, Microsurgery, Posture, Psychomotor Performance, Task Performance and Analysis, Tremor, Hand Strength
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