The cerebrum is the largest part of the brain. The cerebrum is the thinking part of the brain. It controls memory. You use your cerebrum to make decisions and imagine. The cerebrum controls voluntary muscles; the muscles you use when you kick a soccer ball or dance. The cerebrum also makes it possible for you to see, hear, taste, touch, and smell. The cerebrum has two halves, known as hemispheres. It is covered with a large layer of nerve cells, called the cortex. The cortex is involved in many complex brain functions including memory perceptual awareness, thinking, and language. The right side of the cortex controls muscle activities in the left side of the body, and the left side of the brain controls the activities on the left side of the body.
