Which of the following is the appropriate definition of neurosurgery for psychiatric disorders?

a) information given to a patient about a surgical procedure before the surgery in order to prevent anxiety
b) surgery that is performed on brain tissue to reduce the symptoms of psychological disorders
c) surgery that severs the spinal cord of the patient
d) a procedure in which a brief current of electricity is used to trigger a seizure that typically lasts one minute, causing the body to convulse

ANS: B