 The age-old artistic views on synesthesia have some overlap with the current neuroscientific view on neurological synesthesia, but also some major differences, e.g.in the contexts of investigations, types of synesthesia selected, and definitions.While in neuroscientific studies synesthesia is defined as the elicitation of perceptual experiences in the absence of the normal sensory stimulation, in the arts the concept of synaesthesia is more often defined as the simultaneous perception of two or more stimuli as one gestalt experience (Campen 2009).