When you look at a human brain, you mostly see a large, highly convoluted outer surface. What is this part?

When you look at a human brain, you mostly see a large, highly convolu

1.	When you look at a human brain, you mostly see a large, highly convoluted outer surface. What is this part?
Answer» When you look at a human brain, you mostly see a large, highly convoluted outer surface. What is this part?