More than 1.5 million people suffer traumatic brain injury tbi counsel in southern California every year. Traumatic injury to the brain occurs in one of two ways. First, the cerebral cortex can be bruised as the result of a hard object striking the head, or when the head strikes a hard object. This is sometimes called a contusion or concussion. Second, the deep white matter in a person’s brain can suffer diffuse injury as the result of an injury to another part of the body, where the force of the shock is transferred to the brain. In these types of injuries, such as in severe whiplash injuries, the axons or neurons, which conduct electrical impulses in the brain, are damaged.