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.
For the reptile scale, see Prefrontal scale. In mammalian brain anatomy, the prefrontal cortex (PFC) is the cerebral cortex which covers the front part of the frontal lobe. The PFC contains Brodmann areas 9, 10, 11, 12, 46, and 47.o define the prefrontal cortex as the projection zone of the mediodorsal nucleus of the thalamus builds on the work of Rose and Woolsey who showed that this nucleus projects to anterior and ventral parts of the brain in nonprimates.