Synthesia in this month's Scientific American

[Yahzi]

No, not our favorite poster, but the disorder.

Here's an astonishing fact: a man who is color-blind nevertheless can experience colors he can't see, because they are associated with certain numeral shapes. His brain processes the color, even if his eyes won't signal it - unless they see a particular shape.

[BillyTK]

Synesthesia is cool and damn handy if you're a designer (which I am). Although it gets a bit monotonous having to explain why Friday is maroony brown, hangovers taste like blue cacti, and Counting Crows sound like sandpaper. :D

[Knightmare6]

That's cool. I always thought they were limited to the shades. I haven't picked up an issue in a while. I hate being broke :-(

[QuarkChild]

My mom and I once used our synesthesia to annoy my father. We had a long argument about what colors some letters are ("What? H? Blue? You've got to be kidding!"), and of course my father had no idea what we were talking about. ("Letters don't have colors!")

:p

[c4ts]

Wow, hangovers really do taste like blue cacti...

[Kashyapa]

Or agave cacti....one tequila two tequila three tequila- floor. Oooh.....

Sorry, couldn't resist.