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Communication Dans Un Congrès Année : 2010

Auto organisation d'une carte de neurones par modulation de la règle BCM dans un cadre multimodal

Mathieu Lefort
Yann Boniface
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Bernard Girau

Résumé

The cortex must permanently deal with stimuli coming from the environment, perceived through different sensors spatially separated. These stimuli converge in the cortex to be processed together in order to construct a multisensory and coherent view of the world. When somebody is hearing /ba/ and is simultaneously viewing the lips movements corresponding to /ga/, he is perceiving /da/. This phenomenon, known as McGurk effect, reveals the cross correlation between different modalities. Some cortical areas are mainly dedicated to the processing of a specific perception. These areas are topographically organized, meaning that two spatially close neurons respond to close stimuli. The purpose of this paper is to modify the BCM synaptic rule to obtain a self organization of a neuronal map. We introduce a feedback modulation of the learning rule, representing multimodal constraints of the environment. This feedback will be obtained by using a multimap and multilevel architecture of modality assembling.
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Dates et versions

hal-00434530 , version 1 (23-11-2009)

Identifiants

  • HAL Id : hal-00434530 , version 1

Citer

Mathieu Lefort, Yann Boniface, Bernard Girau. Auto organisation d'une carte de neurones par modulation de la règle BCM dans un cadre multimodal. 17e congrès francophone AFRIF-AFIA Reconnaissance des Formes et Intelligence Artificielle - RFIA 2010, Jan 2010, Caen, France. pp.423-430. ⟨hal-00434530⟩
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