<unk>  is a complex procedure performed by specialist neurosurgeons. It is mostly indicated in cases of stroke, damage to third ventricle of brain, brain hemorrhage, accidents leading to head injury, oedema around thalamus, subdural hemorrhage, and cerebrovascular accident. There is also some evidence in thalamocortical dysrhythmia.
Thalamotomy
Corpus callosotomy
Ventriculotomy 
Ventriculostomy
Amygdalotomy
Endoscopic third ventriculostomy
Bilateral cingulotomy
Cerebrospinal fluid diversion