What is synesthesia?
Synesthesia is a neurological phenomenon in which individuals are born with additional links between their senses. Some experience black numbers and letters as having colors (e.g. 2 may look blue or have the feeling that it should be red), or sounds may elicit colors or tastes -- synesthesia can theoretically link up any two senses. These experiences are relatively common (2-4% of the population have one or more forms) and possessing synesthesia is not associated with any disorders.
Our lab (the Center for Brain and Cognition under Dr. VS Ramachandran) is conducting research on the brain-basis of synesthesia through a number of studies at UC San Diego, as well as through internet surveys. If you believe you may have synesthesia and are interested in participating in research, please email us at firstname.lastname@example.org