One lucky guy seems to be experiencing the world’s most colorful sex. His rare form of synesthesia is triggered by orgasm, causing him to briefly see the world in hues of pink. And as a teenager, ...

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 ...

What if we could see sounds? For some people, this isn't a poetic image, but a neurological reality. This experience has a name: synesthesia. This rare phenomenon allows some individuals to perceive ...

Sometimes, when the sex is really good, the colors come. As Holly approaches orgasm, a pastel filter descends over her vision, lasting through her climax and into the afterglow. She tends to see just ...

A new video editing trend known as “X is Red, Yellow, Green, Blue” (or “Thing is Red, Yellow, Green, Blue”) is introducing people to the concept of synesthesia. According to experts, synesthesia is ...

Carol Steen was only seven when she discovered she was different, upon telling a classmate the letter A was the prettiest pink she'd ever seen. "She looked at me like I was crazy," she recalls. Steen ...