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Résumé

The aim of this article is to present the main findings of the dissertation Language organisation in the bilingual brain: a case study on Spanish-Basque bilin-gual aphasia [1]. The goal of that dissertation is to move towards an understanding of how languages and linguistic components are organised in the bilingual brain by means of a case study of a Spanish-Basque bilingual with aphasia. In this paper, we present language difficulties arising at the lexical and morphosyntactic level in both languages. The results reveal that the brain lesion does not impair linguistic levels in the same manner; dissociations were observed between the semantic and the lexical levels, and also within certain morphosyntactic structures. Additionally, the impairment does not affect Spanish and Basque to the same extent. This is evidenced by qualitative differ-ences at the morphosyntactic level and by quantitative differences at the lexical level. These results support the distinction of languages and linguistic components in the bi-lingual brain.