Synthesia

Synthesia is the medical term for the rare ability to detect numbers and letters as colors, as well as in their traditional form. Its cause is not known, but some neuroscientists suggest it might be due to the brain combining multiple senses (for example, those of sight and sound, or taste and smell) into larger, all-encompassing senses, permitting a person with synthesia to perceive the world in ways most people cannot.

See Also

• Synaesthesia