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Fractional-order information in the visual control of interception| old_uid | 15956 |
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| title | Fractional-order information in the visual control of interception |
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| start_date | 2015/07/10 |
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| schedule | 14h |
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| online | no |
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| details | Présentation en anglais |
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| summary | Interceptive actions are paradigmatic examples of our behavioral interaction with dynamic elements of the environment. Yet, the functional organization of such actions is still largely debated, even in the simplest case of interception along a single horizontal dimension. In the present contribution we develop a conceptual framework of perceptuomotor control applicable to both locomotor and manual interception. We demonstrate that the kinematic patterns of behavior observed for rectilinear and curving ball trajectories can be understood as emerging from information-driven attractor dynamics. Importantly, our work shows that experimental phenomena, such as angle-of-approach effects and the occurrence of movement reversals, reveal that the order of the operative control is fractional in nature. That is to say, rather than being limited to the integer orders of zero (position), one (velocity), two (acceleration), and so on, information-movement coupling is based on self-selected (situation-driven) fractional orders capturing intermediate states. |
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| responsibles | Fenouil |
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