A kinematic analysis of a haptic handheld stylus in a virtual environment: a study in healthy subjects
Identifieur interne : 005480 ( Main/Exploration ); précédent : 005479; suivant : 005481A kinematic analysis of a haptic handheld stylus in a virtual environment: a study in healthy subjects
Auteurs : Jurgen Broeren [Suède] ; Katharina S. Sunnerhagen [Suède] ; Martin Rydmark [Suède]Source :
- Journal of NeuroEngineering and Rehabilitation [ 1743-0003 ] ; 2007.
English descriptors
- KwdEn :
- MESH :
- instrumentation : Biomechanical Phenomena.
- Adult, Aged, Arm, Data Collection, Female, Hand, Humans, Learning, Male, Middle Aged, Motor Skills, Reference Values, Reproducibility of Results, Task Performance and Analysis, User-Computer Interface.
Abstract
Virtual Reality provides new options for conducting motor assessment and training within computer-generated 3 dimensional environments. To date very little has been reported about normal performance in virtual environments. The objective of this study was to evaluate the test-retest reliability of a clinical procedure measuring trajectories with a haptic handheld stylus in a virtual environment and to establish normative data in healthy subjects using this haptic device.
Fifty-eight normal subjects; aged from 20 to 69, performed 3 dimensional hand movements in a virtual environment using a haptic device on three occasions within one week. Test-retest stability and standardized normative data were obtained for all subjects.
No difference was found between test and retest. The limits of agreement revealed that changes in an individual's performance could not be detected. There was a training effect between the first test occasion and the third test occasion. Normative data are presented.
A new test was developed for recording the kinematics of the handheld haptic stylus in a virtual environment. The normative data will be used for purposes of comparison in future assessments, such as before and after training of persons with neurological deficits.
Url:
DOI: 10.1186/1743-0003-4-13
PubMed: 17490470
PubMed Central: 1877808
Affiliations:
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Le document en format XML
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To date very little has been reported about normal performance in virtual environments. The objective of this study was to evaluate the test-retest reliability of a clinical procedure measuring trajectories with a haptic handheld stylus in a virtual environment and to establish normative data in healthy subjects using this haptic device.</p></sec><sec sec-type="methods"><title>Methods</title><p>Fifty-eight normal subjects; aged from 20 to 69, performed 3 dimensional hand movements in a virtual environment using a haptic device on three occasions within one week. Test-retest stability and standardized normative data were obtained for all subjects.</p></sec><sec><title>Results</title><p>No difference was found between test and retest. The limits of agreement revealed that changes in an individual's performance could not be detected. There was a training effect between the first test occasion and the third test occasion. Normative data are presented.</p></sec><sec><title>Conclusion</title><p>A new test was developed for recording the kinematics of the handheld haptic stylus in a virtual environment. 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