Ever since I can remember, numbers have appeared to me in specific colors. The number 2 is baby pink, 3 is sunshine yellow, 4 is royal blue-the list goes on. It’s not just that they look a certain way ...

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 ...

Synesthesia is a neurological condition in which information meant to stimulate one of your senses stimulates several of your senses. People are usually born with the condition, but some people ...

I have a form of time–space synesthesia, so the new year arrives for me in a very physical way. I feel myself move around the ...

Daniel Tammet has memorized Pi to the 22,514th digit. He speaks ten different languages, including one of his own invention, and he can multiply enormous sums in his head within a matter of seconds.