Human Brain and the CPU

When I was going through some of my old mails, I came across a self-sent mail. I had written it one year back as a comment to an article written by my friend Suri about the multitasking ability of the human brain. But due to some reason, I had not posted it. Here is a modified version of that comment:

Brain in all essence, acts as the central processing unit (CPU) of the body. It can perform calculations, control various organs of the body, process the inputs from different organs. However, the question is, can it handle multiple tasks at the same time?

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