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.

This study used pupillometry to provide an objective assessment of a form of synesthesia in which people see additional color when reading numbers. It provides convincing evidence that subjective ...

Synesthesia is a perceptual experience in which one sensory input (like a letter or number) is automatically associated with another sensory experience (like a color or feeling). The prevalence of ...

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 ...

A writer of novels, poems, and short stories, Nabokov was not the only one in his family to experience synesthesia—his mother and son, Dmitri, also had chromesthesia. Nabokov’s descriptions of his ...