Enuncia？？o e autoria via comunica？？o alternativa e interlocu？？o mediadora

augmentative and / or alternative communication is a field of assistive technology which encompasses resources to help people with severe speech and language impairments to express themselves. however, communication does not always overcome functional responses within a limited linguistic repertoire. the article discusses language and subject of enunciation, their relations with authorship development and as well as implications to subjective constitution of the non-speech people. theoretically it was based on the bakhtin’s enunciative-discursive principles and on the cultural historical theory of human development. it emphasizes the role and responsibility of the mediator when he contributes, through his dialogue, to increase a significant communication and authorship or, conversely, when he can restrict these possibilities.