Medical: Overview of Synesthesia

Synesthesia is always a popular topic on this blog, judging by the number of hits it gets. In case you don't already know, synesthesia is a medical condition where the stimulation of one sense (such as smell) or cognitive pathway (such as interpreting numbers) gets merged with another sense or cognitive pathway. One commonly occurring example of synesthesia is the seeing of numbers with different colors. For an interesting and informative overview, see this write-up in Interesting Thing of The Day (ITOTD). Enjoy!