Synaesthesia

The term "Synaesthesia" is from the Ancient Greek syn (“joint”) aisthesis (“sensation”), or syn-aisthánestai (“perceiving together”), and it denotes the simultaneous perception of two or more sensory data from different sensory organs. “Synesthetes” are those individuals (4-5% of the population) to whom alphabet letters, numbers or sounds appear to be of a particular colour, smell, or tactile quality; for some of them, numerical sequences can also be seen as points in space. In aesthetic terms, synaesthesia is an effect deliberately pursued by certain representations that seek to provide multiple stimuli which are perceived as one gestalt experience.