Autism is a disorder of the human nervous system that occurs because of brain abnormalities. Scholars found out that the parts of the brain responsible for the processing of the emotions don’t develop in the brains of the autistic people in the same way they do in the brains of non-autistic people. Additional evidence suggests that some of the connections between different areas of the brain may also not connect when a person has autism. For example, one autistic person may be extra-sensitive to fluorescent lights while someone else may be getting sick because of a strong smell. All of this depends on what circuits connect in their brains in which ways.