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.
non-verbal communication; subjectivity; mediation