Synesthesia is a neurological phenomenon in which the senses blend together so that a sound might trigger a burst of color or a written word might come with a specific taste. In people with synesthesia, the brain wiring that normally keeps the senses partly separate appears to be more interconnected, creating cross‑wired senses and a kind of "sixth sense" perception layered on top of everyday experience.
Instead of just hearing a voice, a synesthete might see a shade of blue; instead of only reading a name, they might also taste chocolate or metal. These experiences are involuntary, consistent over time, and deeply integrated into how they perceive the world.
