 Another ‘unusual’ form of mental imagery in general and multimodal mental imagery in particular is in synesthesia. Synesthetes report strong visual experiences of a specific color in response to auditory or tactile (or a wide variety of other non-color) experiences. It has been widely debated just what kind of experience synesthetic experience is. Is it a form of perceptual experience (Matthen 2017, Cohen 2017)? Or is it some kind of higher level, cognitive/linguistic experience (Simner 2007)? The problem is that synesthesia doesn’t really seem to fit squarely in any of these categories.