2. Speech disorders include decreased volume, dysarthria and aphasia. Generally seen in bilateral surgery and dominant hemisphere surgery, mostly temporary. The part related to language function is located in the lateral posterior upper part of thalamus in the dominant hemisphere. During the operation, the patient can use electricity when counting or calling the roll. If counting or naming is interrupted, it means that this part is related to speech function, and the damaged area must move forward and down.
3. Mental disorders are mostly temporary. The operation of the dominant hemisphere has a greater impact on oral functions such as counting and sentence making, and recent memory disorders are more common; The operation of the non-dominant hemisphere has a greater influence on the spatial image functions such as composition and modeling.
4. Cerebral hemorrhage can be caused by direct damage to blood vessels during puncture or local bleeding of lesions (secondary to injuries such as electrocoagulation, freezing or mechanical cutting). Systemic factors such as arteriosclerosis and hypertension are the inducing factors of bleeding. Bleeding is mostly acute, sometimes subacute or chronic. The patient gradually developed hemiplegia, unconsciousness, increased intracranial pressure and progressive deterioration after operation, so the possibility of bleeding should be considered. CT examination can quickly diagnose diseases. The only treatment is to open the skull in time.