Add Yahoo as a preferred source to see more of our stories on Google. A new study suggests that people with synesthesia have different pupil reactions depending on the colors they observed. . | Credit ...

It's hard to pinpoint when synesthesia, the rare neurological condition where a stimulus that affects one sense prompts a response in a different sense, was first documented. Scientific literature ...

Ever caught a whiff of the color blue? Or tasted a symphony? If that sounds completely bonkers to you, you’re in the majority. But for a small slice of humanity, these cross-sensory experiences are ...

Synesthesia is a neurological phenomenon derived from Greek for a "union of the senses.” That means people who have it can see time, hear colors or even taste words. Dr. Mary Spiller, a cognitive ...

Consequently, whatever associations I have with that color carry over to that number. For example, I *hate* the number 7 for no other and no better reason than the fact that it appears orange to me, ...

Some people see numbers as always having certain colors — for example, they see the number 5 as red. A new study reveals that their eyes react as if they see those colors in the real world. The study ...