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 Way of the Ice Pick. The lobotomy is a type of neurosurgery, or surgery performed on the brain, known as psychosurgery. The idea behind psychosurgery is that severe forms of mental illness can be treated by changing the way that the brain works.o a lobotomy was intended to sever the white matter between different areas of gray matter. (Another name for lobotomy, leucotomy, means slice/cut white in Greek.). The first lobotomies were performed in 1935 by Portuguese neurologists Dr. Antonio Egas Moniz and Dr. Almeida Lima.