Which medical procedure, performed in cases of severe epilepsy, cuts the corpus callosum and offers much information about the functions of the two brain hemispheres?

Corpus Callosotomy

Explanation:

Severe epilepsy have higher tendency of causing seizures. A Corpus Callosotomy is a medical procedure carried of during an operation for the treatment of epilepsy. This procedure is performed by cutting the corpus callosum, followed by breakage in order to reduce the spread of seizures from hemisphere to hemisphere.