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 ...

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 ...

A psychological phenomenon known as "grapheme-color synesthesia" describes individuals who experience vivid colors whenever they see, hear, or think of ordinary letters and digits. New research adds ...

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.

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).

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 ...

Not everyone's senses are separate. Those with the neurological condition can hear colors, feel sounds and even see time as different points in space. When Bernadette Sheridan hears your name, she ...

If you happen to find yourself seeing music, smelling color, or unusually combining two other senses, you may have synesthesia, a possibly genetic condition that affects about 4 percent of the ...

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.