So, the modality refers to a certain type of information and/or the representation format in which information is stored. The medium is the means whereby this information is delivered to the senses of the interpreter. Natural language is the primary modality, having many invariant properties across the auditory media as spoken language, the visual media as written language, the tactile media as Braille, and kinetic media as sign language. When meaning is conveyed by spoken language, it is converted into sound waves broadcast by the speaker and received by another's ears. Yet this stimulus cannot be divorced from the visual evidence of the speaker's manner and gestures, and the general awareness of the physical location and its possible connotative significance. Similarly, meaning that is contained in a visual form cannot be divorced from the iconicity and implications of the form. If handwritten, is the writing neat or does it evidence emotion in its style. What type of paper is used, what colour ink, what kind of writing instrument: all such questions are relevant to an interpretation of the significance of what is represented. But images are distinguishable from natural language. For Roland Barthes (1915-80), language functions with relatively determinate meanings whereas images "say" nothing. Nevertheless, there is a rhetoric for arranging the parts which are to signify, and an emerging, if not yet generally accepted, syntax that articulates their parts and binds them into an effective whole.
So, the modality refers to a certain type of information and/or the representation format in which information is stored. The medium is the means whereby this information is delivered to the senses of the interpreter. Natural language is the primary modality, having many invariant properties across the auditory media as spoken language, the visual media as written language, the tactile media as Braille, and kinetic media as sign language. When meaning is conveyed by spoken language, it is converted into sound waves broadcast by the speaker and received by another's ears. Yet this stimulus cannot be divorced from the visual evidence of the speaker's manner and gestures, and the general awareness of the physical location and its possible connotative significance. Similarly, meaning that is contained in a visual form cannot be divorced from the iconicity and implications of the form. If handwritten, is the writing neat or does it evidence emotion in its style. What type of paper is used, what colour ink, what kind of writing instrument: all such questions are relevant to an interpretation of the significance of what is represented. But images are distinguishable from natural language. For Roland Barthes (1915-80), language functions with relatively determinate meanings whereas images "say" nothing. Nevertheless, there is a rhetoric for arranging the parts which are to signify, and an emerging, if not yet generally accepted, syntax that articulates their parts and binds them into an effective whole.