Improving Mouse-Based Computer Interaction in Users With Weak Upper Limb Motion Control Using a Haptic Assistive System
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Auteurs : Nikos G. Tsagarakis [Italie] ; Darwin G. Caldwell [Italie]Source :
- IEEE transactions on human-machine systems : (Print) [ 2168-2291 ] ; 2013.
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- Pascal (Inist)
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- topic : Robotique.
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Abstract
Computer-assisted therapy is one of the most promising new techniques for those suffering from physical and neurological dysfunction. Yet, impairments to physical movement arising from a central nervous system dysfunction or from muscle spasms generated through other neurological damage or dysfunction can often make it difficult or impossible for individuals to interact with computer-generated environments using a conventional mouse interface. This paper investigates the use of a 2-D haptic device as an assistive robotic aid to minimize the effects of the pathological absence of motor control in the upper limb in impaired users when using a mouse. The assistive functionality is evaluated in 2-D tracking tasks using a human subject with failure of the gross coordination of the upper limb muscle movements-"Muscle Ataxia." The results demonstrate that with this system the capability of the impaired subject to track predefined trajectories within a computer generated 2D is significantly improved. The average of the means of the error distance for the trajectories performed under the assistive mode was significantly lower (more than 40%) than that of the trajectories without assistance. In addition, when using the assistive device, the impaired subject was able to complete the tracking tasks in less time.
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Pascal:13-0182205Le document en format XML
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<term>Motor control</term>
<term>Muscle</term>
<term>Robotics</term>
<term>Tactile sensitivity</term>
<term>Therapy</term>
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<term>Upper limb</term>
<term>User interface</term>
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<term>Sensibilité tactile</term>
<term>Thérapie</term>
<term>Système nerveux central</term>
<term>Muscle</term>
<term>Endommagement</term>
<term>Contrôle moteur</term>
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<front><div type="abstract" xml:lang="en">Computer-assisted therapy is one of the most promising new techniques for those suffering from physical and neurological dysfunction. Yet, impairments to physical movement arising from a central nervous system dysfunction or from muscle spasms generated through other neurological damage or dysfunction can often make it difficult or impossible for individuals to interact with computer-generated environments using a conventional mouse interface. This paper investigates the use of a 2-D haptic device as an assistive robotic aid to minimize the effects of the pathological absence of motor control in the upper limb in impaired users when using a mouse. The assistive functionality is evaluated in 2-D tracking tasks using a human subject with failure of the gross coordination of the upper limb muscle movements-"Muscle Ataxia." The results demonstrate that with this system the capability of the impaired subject to track predefined trajectories within a computer generated 2D is significantly improved. The average of the means of the error distance for the trajectories performed under the assistive mode was significantly lower (more than 40%) than that of the trajectories without assistance. In addition, when using the assistive device, the impaired subject was able to complete the tracking tasks in less time.</div>
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