You can watch Ramachandran explain this and much more of his research into synaesthesia and the brain in this excellent talk: [http://video.google.com/videoplay

You can watch Ramachandran explain this and much more of his research into synaesthesia and the brain in this excellent talk: [http://video.google.com/videoplay?docid=-4684607596399338611 http://video.google.com/videoplay?docid=-4684607596399338611]