The human brain comprises two hemispheres separated by a bundle of nerves. The left hemisphere controls movement for the right side of the body, while the right hemisphere directs the left side. The hemispheres specialize in distinct mental functions—different aspects of visual perception, for example—but most behaviors and abilities require activity in both halves of the brain.
A widespread myth suggests that some people, whose left hemisphere is dominant, are more quantitative, logical, and analytical, while right-brained individuals are more emotional, intuitive, and creative. However, scientific evidence does not support these classifications.