Oxford Handbook of Synesthesia

Synesthesia is a fascinating phenomenon which has captured the imagination of scientists and artists alike. This inherited condition gives rise to a kind of 'merging of the senses', and so for those who experience it, everyday activities like reading or listening to music trigger extraordinary impressions of colours, tastes, smells, shapes and other sensations. Synesthesia research also informs us about normal sensation because all people experience cross-sensory mappings to an implicit degree. …