The largest portion of your brain is called the cerebrum. Your cerebrum is responsible for all the voluntary processes that you do each day, including thought. Voluntary means that you want to do something, or that you decide to do something,like hold your hand in the air, wave to yourself, and tap yourself on the head. As you do these actions, your cerebrum sends electrical messages out to your body using the neurons of your nervous system.When the message reaches your arm, your muscles obey and do as they are instructed.
Your cerebrum is broken into two sides, a left side and a right side. Interestingly, each side of the cerebrum seemingly controls the opposite side of the body. That is to say that the left side of your cerebrum controls the right side of your body, while the right side of your cerebrum controls the left side of your body.
Some studies have suggested that the left side of your cerebrum is responsible for problem solving and analytical thought, while the right side of your cerebrum is responsible for creative thought.