“Synesthesia” was a word that had never entered my vocabulary (or perhaps even my eyes or ears) before age 16. But the first time that the concept encroached on my consciousness it felt immediately familiar, to the point of utter, unquestioned normalcy. My sister was sitting next to me on the couch explaining that her friend at school had a bizarre tendency – an automatic habit of associating letters or numbers with colors, and quickly rattling off the sequence of colors associated with names or other words. I was struck (But Casey, you’re just blue-blue-red-green-yellow!) and a quick Wikipedia search showed both of us that I definitely had synesthesia.
2 or 3 years later during my freshman year in college I stumbled upon this documentary. If you’ve never seen it you really should- Daniel Tammet is a remarkable human being and a living window into the world of the brain. And he seems really nice too! I’d actually seen this film once in my early high school years and nearly forgotten about it. I watched this scene with Tammet’s magical description of his synesthesia on the very same day that I declared my neuroscience studies major at Macalester. It’s been 7 years and watching this still sends shivers up and down and back up my spine.
(and 7 years later, the example photo on the Wikipedia page – to roughly demonstrate the experience to non-synesthetes – is still the same! check it out below)