Imagine a world where you feel sounds, taste music or see letters and numbers in colour. This may sound strange to most of us, but for synesthetes these perceptions are part of everyday life.
The most common form appears to be seeing colours in numbers and/or letters. This is called colour-language synesthesia. But other less common experiences are also possible. A synesthete may report that she feels piano music tickling her cheeks or that a person’s voice tastes like chutney.