“…The failure of thiopental to significantly alter the relative hypometabolism of the focus, in either direction, in the face of marked effects on interictal SEEG spike frequency, also suggests that this metabolic deficit is unrelated to interictal epileptiform electrophysiological events. This would agree with the concept that an epileptic focus usually develops in or adjacent to an area of cerebral damage, characterized by neuronal destruction, glial replacement, and decreased energy demands [4 13. Clearly, however, the hypometabolic zone is not fixed, since it can become profoundly hypermetabolic during seizures [I 5, 15a, 15b, 16, 281.…”