What colour is H? Is 4 brighter than 9? For most people these questions might seem baffling, but not for people with grapheme-color synesthesia. In the first long-term childhood study on ...

People with color-grapheme synesthesia experience color when viewing written letters or numerals, usually with a particular color evoked by each grapheme (i.e., the letter 'A' evokes the color red).

A recent study has provided a better understanding of grapheme-Color Synaesthesia In children. What colour is H? Is 4 brighter than 9? For most people these questions might seem baffling, but not for ...

Synesthesia is a condition in which sensory input from one cognitive stream gives rise to experience in another unstimulated cognitive stream. The most common forms of synesthesia include ...

Synesthesia is a condition in which sensory input from one cognitive stream gives rise to experience in another unstimulated cognitive stream. The most common forms of synesthesia include ...

Pupil size in people with synesthesia changed depending on how bright or dark the perceived colors were.

For most people, the plain, black letters on this page are rather unremarkable. For less than four percent of the population however, these words are a little more colorful, tactile, or might even ...