False localization of seizure activity in the EEG

Traditional theories of EEG localization are discussed, along with their limitations and contemporary attempts to minimize false localization. Sources of error include: erratic epileptiform activity, local destruction of generators, evoked responses, and autonomous secondary foci. Several cases are presented which are thought to represent false localization by virtue of incompetent generators. It is emphasized that "epileptiform activity" and "epileptogenicity" are not synonomous.