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• W2185682016 abstract "For the simple task of grasping an object, humans integrate different sensory inputs to estimate magnitudes such as the position of their hand or the force exerted. Visual, tactile or proprioceptive information is optimally combined and relied upon to guide their movements. Patients endowed with a prosthesis, however, can only rely on their own vision to control the artificial limb. Under such conditions, it is believed that providing them with artificial feedback could help improve the manoeuvrability of the device. Nevertheless, the capacity to use such feedback in everyday life situations is yet to be confirmed; So is the description of the optimal conditions under which it should be applied. In this thesis we tackle the question of optimality when providing artificial vibrotactile stimulation, both in terms of exploitability and performance. The perspective adopted is twofold, and combines evaluations within and across modalities: We first focus on the encoding that is to be presented to the user, aiming to exploit his perceptual sensitivity and to refine the information transmitted. We then turn to how the new modality is actually combined with other natural sensing capacities. Both analyses are undertaken in the framework of a simple task, specifically conceived to isolate the underlying principles that are relevant to each question. Our results highlight that subjects exploit the newly added modality and integrate it with their own natural senses. Optimality, however, requires of specific key points. Namely, the type of encoding is to be carefully adapted to the specificities of the sensitivity and ought to be quantified for each individual subject. Likewise, the degree of uncertainty that is better coped with needs to be quantified across modalities, for the performance reached when combining natural and artificial information is shown to be directly linked to their relative amount of noise." @default.
• W2185682016 created "2016-06-24" @default.
• W2185682016 creator A5069196546 @default.
• W2185682016 date "2009-01-01" @default.
• W2185682016 modified "2023-09-27" @default.
• W2185682016 title "Statistical modelling of multisensory integration in the context of a prosthetic hand" @default.
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