An extending Fitts' Law for human upper limb performance evaluation

N.F. Yang, D.W. Jin, Ming Zhang, C.H. Huang, R.C. Wang

Research output: Chapter in book / Conference proceedingConference article published in proceeding or bookAcademic researchpeer-review

6 Citations (Scopus)


Human motor behavior is complex and is challenging to understand. Fitts' Law presented a relationship between speed, accuracy, amplitude of movement and target size in upper extremity tasks. In this paper, Fitts' Law was extended from one-dimensional motion to two-dimensional motion in the polar coordinate system for the human upper limb performance. Based on this, a set of indices were proposed. The index of difficulty and the index of performance were introduced as the general indices for the quality measure of plane pointing movement, which is a basic functional action of upper-limb in human daily life. Five healthy subjects were asked to perform six pointing tasks with different indices of difficulty. All movements were recorded using a Vicon motion analysis system. The movement quality was evaluated using these evaluation indices.
Original languageEnglish
Title of host publicationProceedings of the 23rd Annual International Conference of the IEEE Engineering in Medicine and Biology Society, 2001, October 2001
Number of pages4
ISBN (Print)0780372115
Publication statusPublished - 2001
EventIEEE Engineering in Medicine and Biology Society. Conference [EMBC] -
Duration: 1 Jan 2001 → …

Publication series

NameIEEE Engineering in Medicine and Biology Society. Conference Proceedings
ISSN (Print)1094-687X


ConferenceIEEE Engineering in Medicine and Biology Society. Conference [EMBC]
Period1/01/01 → …


  • Biomechanics
  • Physiological models

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