A person hears a piece of music and, at the same time, sees a deep blue colour. Another reads a word and senses a light taste ...

Richard Cytowic, a pioneering researcher who returned synesthesia to mainstream science, traces the historical evolution of our understanding of the phenomenon. By Richard E. Cytowic / MIT Press ...

Vladimir Nabokov first noticed, at age 7, his special gift of synesthesia when playing with colorful alphabet blocks that "were all the wrong color." Source: Contributor: Neil Overy/Alamy Stock Photo.

Hollywood actress Cynthia Erivo recently revealed she experiences synesthesia, a sensory phenomenon where she sees colours when hearing music. Affecting about one to four per cent of people, ...