[[Reason]]ing functions such as [[language]] and [[mathematics]]<!-- Could this belief have resulted from a failure of brain researchers to know what mathematics is? See this article's discussion page. --> are often lateralized to the left hemisphere of the brain, whereas visual and [[music]] functions such as spatial manipulation<!-- A lot of "spatial manipulation" is included in mathematics, if "mathematics" is correctly understood. -->, [[facial perception]], and musical ability are lateralized to the right hemisphere.
