A deep dive into synaesthesia reveals the neurological theories behind why some people "see" music and "taste" words.

Research shows that the unique sensory experience of “synesthesia” can be acquired through training, and leads to a variety of mental benefits. Vincent van Gogh, Richard Feynman, Stevie Wonder. Each ...

I recently heard a fascinating Radiolab report about tetrachromacy—or the presence of a fourth cone for color perception in people, usually women. Most people can see a million colors; tetrachromats ...