Synesthesia (syn-es-the-sia, Brit. syn-aes-the-sia): “The production of a sense impression relating to one sense or part of the body by stimulation of another sense or part of the body.” Synesthesia is a neurological disorder in which the experience of one sense motivates an involuntary association with another sense. Those who experience synesthesia, known as synesthetes, are able to either perceive letters or numbers as inherently colored, hear movement, or – in probably the best-known cases of the disorder – see music in the form of colors and/or associative shapes. Now, cognitive sciences seem, on the surface, to have little to do with the study of cinema, but the topic of synesthesia can be particularly helpful in understanding the way in which we interpret the interaction of the two senses most available in watching movies: the aural and the visual.