Postural variation of hand precision grips by object size
- Authors
- Park, Jongwoo; Seo, Na Jin; Son, Jaebum; Kim, Wheekuk; Cheong, Joono
- Issue Date
- 5월-2014
- Publisher
- KOREAN SOC MECHANICAL ENGINEERS
- Keywords
- Finger movement; Grip posture; Principal component analysis; Regression analysis
- Citation
- JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY, v.28, no.5, pp.1641 - 1651
- Indexed
- SCIE
SCOPUS
KCI
- Journal Title
- JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY
- Volume
- 28
- Number
- 5
- Start Page
- 1641
- End Page
- 1651
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/98582
- DOI
- 10.1007/s12206-014-0309-x
- ISSN
- 1738-494X
- Abstract
- Our two-fold purpose was (i) to quantitatively identify characteristic vectors, i.e., specific combinations of joint angles of fingers, that dominate the posture variation of precision grips in the configuration space (the space with joint variables of the fingers in the hand), and (ii) to investigate linear correlations between the postural variation and the object size using the parameters of the characteristic vectors. Experiments involving 14 participants measured the grip postures of the participants who were asked to grasp eight cylindrical objects of different diameters using six designated precision grips (spherical, tripod, pinch, quad-pinch, tri-pinch, and mini-pinch). Regression analysis showed that within each precision grip, the postures changed gradually in a unique linear direction in the configuration space with an increasing object size relative to the hand size. Quantitative models of the precision grips were established that could be used to reproduce the precision grip postures for grasping various object sizes by adults of various hand sizes.
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Collections - College of Science and Technology > Department of Electro-Mechanical Systems Engineering > 1. Journal Articles
- Graduate School > Department of Control and Instrumentation Engineering > 1. Journal Articles
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