Its prevalence may be greater than other types because auditory and visual events are much more highly correlated in nature when compared to other types of synaesthesia associated with colour and visual forms. (sciencedaily.com)
People with synaesthesia hear numbers in colour experience words as tastes. (newscientist.com)
Ludwig thinks some of neural processes that cause the type of connections in her experiments also underlie full synaesthesia in humans. (newscientist.com)