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Innovations in Neural Conceptual Representation Exploring Aspects of Semantics

Semantic representation –the knowledge that we have of the world– is an essential component of our mind whose nature can be inferred from similarity measures, which we use every day to compare entities on the basis of their meanin... ver más

14/10/2018

UNIVERSITY COLLEGE...

183K€

Presupuesto del proyecto: 183K€

Líder del proyecto

UNIVERSITY COLLEGE LONDON No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Fecha límite participación Sin fecha límite de participación.

Financiación concedida El organismo H2020 notifico la concesión del proyecto el día 2018-10-14

MSCA-IF-2015-EF: Marie Skłodowska-Curie Individual F...

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1 Participantes

UNIVERSITY COLLEGE LONDON

183.45K€ | Lider

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Duración del proyecto: 31 meses Fecha Inicio: 2016-03-04
Fecha Fin: 2018-10-14

Líder del proyecto

UNIVERSITY COLLEGE LONDON No se ha especificado una descripción o un objeto social para esta compañía.

TRL 4-5

Presupuesto del proyecto 183K€

Fecha límite de participación Sin fecha límite de participación.

Descripción del proyecto Semantic representation –the knowledge that we have of the world– is an essential component of our mind whose nature can be inferred from similarity measures, which we use every day to compare entities on the basis of their meaning. Many research efforts have been made to understand our knowledge, proposing that it could be based upon data deriving from our sensorimotor experience or from any sort of regularity in spoken and/or written language. Recently, models combining these two data sources obtained semantic representations that are more informative and similar to human ones. However, 1) what information is used to represent meaning and 2) the way our brains organize semantic representations still remain hot topics of debate in the field. The project aims to address these queries, by investigating, for the first time, the relation between semantic representations at three different levels: behaviour, models and brain activity. We will derive similarity measures and combined similarity models using different data sources (text corpora, semantic feature norms, ratings studies). Next, in an fMRI study, adult English speakers will perform implicit (lexical decision) and explicit (categorization) tasks. We will use (1) a state-of-the-art technique (Representational Similarity Analysis) that has heralded a new research era in the study of semantics since it allows one-to-one mappings between patterns of brain-activity measurement, behavioural and computational models, and (2) dimensionality-reduction approaches. Results will provide new knowledge on the nature of semantic structure: they will allow a better characterization of different similarity measures, adjudicating between the different similarity models and behavioural data as well as identifying differences between similarity models linked to differences in neural activity. This will reveal the different neural contributions to different aspects of meaning, opening up new research agendas.

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