There is evidence that autistics have distinct neurological differences when compared with those who are NTs. MRI images have shown that the total size of the parietal lobe is increased in children with autism. The increased size of the parieto-temporal lobe was one of the most replicated “abnormalities” of autistics along with other increases in brain size. These two lobes primarily control the sensory input of the body and the language, speech, hearing and communication centers of the brain. However, their is no evidence of an increased overall brain size. This means that there must be some part of the brain that is slightly smaller to compensate. It was also found that there was a significant difference in the grooves of the brain with either a significant lack of the Sylvian fissure or differences in the gyri.