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Minimally assistive robot training for proprioception enhancement.

Identifieur interne : 001062 ( Main/Exploration ); précédent : 001061; suivant : 001063

Minimally assistive robot training for proprioception enhancement.

Auteurs : Maura Casadio [Italie] ; Pietro Morasso ; Vittorio Sanguineti ; Psiche Giannoni

Source :

RBID : pubmed:19139867

English descriptors

Abstract

In stroke survivors, motor impairment is frequently associated with degraded proprioceptive and/or somatosensory functions. Here we address the question of how to use robots to improve proprioception in these patients. We used an 'assist-as-needed' protocol, in which robot assistance was kept to a minimum and was continuously adjusted during exercise. To specifically train proprioceptive functions, we alternated blocks of trials with and without vision. A total of nine chronic stroke survivors participated in the study, which consisted of a total of ten 1-h exercise sessions. We used a linear mixed-effects statistical model to account for the effects of exercise, vision and the degree of assistance on the overall performance, and to capture both the systematic effects and the individual variations. Although there was not always a complete recovery of autonomous movements, all subjects exhibited an increased amount of voluntary control. Moreover, training with closed eyes appeared to be beneficial for patients with abnormal proprioception. Our results indicate that training by alternating vision and no-vision blocks may improve the ability to use proprioception as well as the ability to integrate it with vision. We suggest that the approach may be useful in the more general case of motor skill acquisition, in which enhancing proprioception may improve the ability to physically interact with the external world.

DOI: 10.1007/s00221-008-1680-6
PubMed: 19139867


Affiliations:


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