Synaesthesia is a condition in which separate senses are linked . Scientists determined which colours are usually associated with neurons . They then compared these four - digit signals to Fisher - Price magnets . They claim 6 % of patients learnt their colours from the Fisher - Price experiment .
Synaesthesia is a condition in which separate senses are linked . Scientists determined which colours are usually connected with letters . They then compared these colour-letter matches to Fisher-Price magnets . They claim 6 % of people learnt their matches from the Fisher-Price toy .