Haptically creating affordances: the user-tool interface.
Identifieur interne : 006D31 ( Main/Curation ); précédent : 006D30; suivant : 006D32Haptically creating affordances: the user-tool interface.
Auteurs : Jeffrey B. Wagman [États-Unis] ; Claudia CarelloSource :
- Journal of experimental psychology. Applied [ 1076-898X ] ; 2003.
English descriptors
- KwdEn :
- MESH :
- physiology : Hand Strength.
- Choice Behavior, Environment, Fixation, Ocular, Humans, Rotation, User-Computer Interface, Visual Perception.
Abstract
Successful use of a hand-held tool requires overcoming the rotational inertia of the hand-plus-tool system. Where an object is grasped affects this rotational inertia. Appropriate choice of grip position may be crucial in the safe, effective, and efficient control of a hand-held tool. In 3 experiments, the authors investigated how choice of grip position on a tool was constrained by task demands. The results suggest that choice of grasp position serves to establish relationships among 3 variables derived from the inertial ellipsoid of the hand-object system (volume, symmetry, and eigenvector angle) in a way that specifically reflected the power or precision constraints of the given task. These variables have previously been shown to play a role in haptic perception of tool function. Changing grasp position on a tool is a way to exert control over the nuances of the user-tool interface.
DOI: 10.1037/1076-898X.9.3.175
PubMed: 14570511
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pubmed:14570511Le document en format XML
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