written presentation

Hello!
I have to do a written presentation. I have to write something very interesting but also complicated for me. The topic is:
A part of human's brain!
-To describe its functions;
-correspondence between parts of brain and computer system;

Please, could you give me any hints or recommend any sites about my task. I would really appreciate if you could give me some advice and maybe recommed some links with information about the human's brain and examples for the accordance with the computer.
Thank you