<P> Linear reasoning functions of language such as grammar and word production are often lateralized to the left hemisphere of the brain . In contrast, holistic reasoning functions of language such as intonation and emphasis are often lateralized to the right hemisphere of the brain . Other integrative functions such as intuitive or heuristic arithmetic, binaural sound localization, etc. seem to be more bilaterally controlled . </P> <P> Infarcts of the centrum ovale can occur . </P> <P> As a treatment for epilepsy the corpus callosum may be severed to cut the major connection between the hemispheres in a procedure known as a corpus callosotomy . </P> <P> A hemispherectomy is the removal or disabling of one of the hemispheres of the brain . This is a rare procedure used in some extreme cases of seizures which are unresponsive to other treatments . </P>

What part of the brain is divided into two hemispheres