"According to Dr. Ramachandran, synaesthesia is seven times more common in artists and poets than the general population."
We might want to reconsider and reevaluate that claim in light of the following recent article:
Ward, Jamie, Daisy Thompson-Lake, Roxanne Ely, and Flora Kaminski. 2008. "Synaesthesia, creativity and art: What is the link?" British Journal of Psychology; vol. 99: 127-141.
A copy may be access via the following:
Sean A. Day