Auto-organisation d'une carte de neurones BCM sous contrainte multimodale
Identifieur interne : 002A35 ( Main/Exploration ); précédent : 002A34; suivant : 002A36Auto-organisation d'une carte de neurones BCM sous contrainte multimodale
Auteurs : Mathieu Lefort [France] ; Yann Boniface [France] ; Bernard Girau [France]Source :
Descripteurs français
Abstract
Un objet est défini par un ensemble cohérent de perceptions que le cerveau reçoit par des capteurs séparés. Ces différents flux perceptifs sont traités par des aires sensorielles auto-organisées, à savoir que deux neurones proches sont sensibles à des stimuli proches. Cependant, en convergeant dans des aires dites associatives, ces différentes perceptions interagissent afin de créer une représentation cohérente du monde. L'effet créé par le ventriloque, à savoir une perception auditive modifiée par la vue, illustre ces interactions entre perceptions. Dans nos travaux précédents, nous avions proposé un modèle de cartes perceptives, utilisant une règle de plasticité BCM (Bienenstock Cooper Munro), capable de s'auto-organiser. Nous avions également obtenu des résultats préliminaires montrant que cette auto-organisation pouvait être influencée par une contrainte multimodale créée par un mécanisme d'association de modalités. Nous regardons ici plus précisement comment cette auto-organisation peut être modifiée par un contexte multimodal, soit directement, soit par une influence latérale dans le cadre d'une architecture d'association de modalités.
Url:
Affiliations:
- France
- Grand Est, Lorraine (région)
- Nancy
- Institut national polytechnique de Lorraine, Université Nancy 2, Université de Lorraine
Links toward previous steps (curation, corpus...)
- to stream Hal, to step Corpus: 005750
- to stream Hal, to step Curation: 005750
- to stream Hal, to step Checkpoint: 002276
- to stream Main, to step Merge: 002A99
- to stream Main, to step Curation: 002A35
Le document en format XML
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<front><div type="abstract" xml:lang="fr">Un objet est défini par un ensemble cohérent de perceptions que le cerveau reçoit par des capteurs séparés. Ces différents flux perceptifs sont traités par des aires sensorielles auto-organisées, à savoir que deux neurones proches sont sensibles à des stimuli proches. Cependant, en convergeant dans des aires dites associatives, ces différentes perceptions interagissent afin de créer une représentation cohérente du monde. L'effet créé par le ventriloque, à savoir une perception auditive modifiée par la vue, illustre ces interactions entre perceptions. Dans nos travaux précédents, nous avions proposé un modèle de cartes perceptives, utilisant une règle de plasticité BCM (Bienenstock Cooper Munro), capable de s'auto-organiser. Nous avions également obtenu des résultats préliminaires montrant que cette auto-organisation pouvait être influencée par une contrainte multimodale créée par un mécanisme d'association de modalités. Nous regardons ici plus précisement comment cette auto-organisation peut être modifiée par un contexte multimodal, soit directement, soit par une influence latérale dans le cadre d'une architecture d'association de modalités.</div>
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