Résumé : Can learning to read change the information process and expand the storage capacity of the human brain? The purpose of this article is to review and to discuss models of memory (working memory, short term and long term memory) in their relation to language, as well as the possible cognitive changes prompted by literacy. By reviewing models of memory and executive functions, we aim at identifying questions that have promoted theoretical evolution, as well as the matching and disagreement in the concepts available in the area. Differences in knowledge processing and storage in literates and illiterates are highlighted, taking into account behavioural and brain imaging data. The data suggest that literacy alters the way in which linguistic knowledge is stored and processed by bursting the refinement of the visual and auditory perceptual systems, necessary to the grapheme-phoneme association.