An interesting representation of how the right and left sides of the brain are different from each other. It's been a while since an art piece made me think of what it's supposed to represent. Props to you for that.
Coloring the characters might improve this, but then again, I think the characters being black and white look just fine.
I really like the background and how each color goes with the character they're representing. Or maybe I'm just thinking too hard, haha.
Overall, interesting representation of the left and right sides of the brain. It's simple, yet kind of complex at the same time. Nice work.