High Quality Content by WIKIPEDIA articles! High Quality Content by WIKIPEDIA articles! Representational systems (also known as sensory modalities and abbreviated to VAKOG or known as the 4-tuple) is a neuro-linguistic programming model that examines how the human mind processes information. It states that for practical purposes, information is (or can be treated as if) processed through the senses. Thus people say one talks to oneself (the auditory sense) even if no words are emitted, one makes pictures in one's head when thinking or dreaming (the visual sense), and one considers feelings in the body and emotions (known as the kinesthetic sense).