jacksonian epilepsy: focal epilepsy in which the attack usually moves from distal to proximal limb muscles on the same side of the body
cortical epilepsy: epilepsy in which the attacks begins with an isolated disturbance of cerebral function (as a twitching of a limb or an illusory sensation or a mental disturbance)
meiosis: (genetics) cell division that produces reproductive cells in sexually reproducing organisms; the nucleus divides into four nuclei each containing half the chromosome number (leading to gametes in animals and spores in plants)