Two links to this TEDTalk, should you want to watch it again:
1. In my Dropbox folder, here: http://db.tt/fPAXLtXp.
The path is Video / Science & Technology / Sense Perception. It’s the first one in that folder.
2. From the TED site, here: Beau Lotto.
If you watch on the TED site, you can choose to see it with subtitles. However, with a slow connection, it may not stream very well.