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Communication Dans Un Congrès Année : 2006

A combined pyschophysical--modelling investigation of the mechanisms of tactile picture perception.

Résumé

The involvement of visual cortex in haptic spatial perception, including haptic object recognition, is well established, but little is known about the precise mechanisms involved. We have pursued a joint experimental-modelling approach to explore possible mechanisms. Human exploratory paths in a task involving tactile picture perception are used to drive a system-level model of haptic processing, based on the idea that humans continuously compare tactile and proprioceptive sensory input to multiple hypotheses about the contents of the picture. Each hypothesis is represented as a mental image, expressed as a pattern of activation in visual cortex representing the expectation of finding particular tactile features at particular points in space. The simulated responses of the model show good agreement with human performance when averaged over subjects, although we are unable to match performance on a subject-bysubject basis.
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Dates et versions

hal-00380061 , version 1 (29-04-2009)

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  • HAL Id : hal-00380061 , version 1

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Andrew P. Davison, Pierre Yger, Yves Frégnac, J. Chan, F. Newell. A combined pyschophysical--modelling investigation of the mechanisms of tactile picture perception.. Proceedings of the 15th Annual Computational Neuroscience Meeting, 2006, Edinburgh, United Kingdom. pp.170. ⟨hal-00380061⟩

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