Recently I gave a TED talk on synesthesia, which you can see here on YouTube or at the TED–Ed web site. Mostly, given time constraints, it focused on grapheme synesthesia, one of the most common forms ...

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. Its not just that they look a certain way, ...

Synesthesia has received increasing attention in popular science writing. Psychology Today describes it as a neurological condition in which stimulation of one sensory or cognitive pathway, for ...