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.
Lobotomy (Greek: Î»Î¿Î²ÏÏ lobos  lobe (of brain); ÏÎ¿Î¼Î® tomÄ cut, slice) is a neurosurgical procedure, a form of psychosurgery, also known as a leukotomy or leucotomy (from the Greek Î»ÎµÏÎºÏÏ leukos clear, white and tome).obotomy patients often show a marked reduction in initiative and inhibition. They may also exhibit difficulty putting themselves in the position of others because of decreased cognition and detachment from society. Immediately following surgery patients were often stuporous, confused, and incontinent.