Sciatica is pain, tingling, or numbness produced by an irritation of the nerve roots that lead to the sciatic nerve.The sciatic nerve is formed by the nerve roots coming out of the spinal cord into the lower back. It goes down through the buttock, then its branches extend down the back of the leg to the ankle and foot.ciatica is pain, tingling, or numbness produced by an irritation of the nerve roots that lead to the sciatic nerve.
prefrontal lobotomy - surgical interruption of nerve tracts to and from the frontal lobe of the brain; often results in marked cognitive and personality changes. frontal lobotomy, leucotomy, leukotomy, lobotomy, prefrontal leucotomy, prefrontal leukotomy.
The frontal cortex, or frontal lobe, of the brain is removed or partially damaged in a lobotomy. Talk therapy, medication and other treatments have virtually completed replaced lobotomies.Lobotomies were historically used to treat patients who suffered with psychological illnesses. lobotomy is a surgical procedure which involves removing or damaging parts of the frontal cortex.