FIGURE 16-8 Generalized Seizure Patterns Examples of EEG patterns recorded during a generalized seizure. Dots on the hemispheres below indicate the approximate recording sites. Column numbers mark the seizure’s stages: (1) normal record before the attack; (2) onset of seizure and tonic phase; (3) clonic phase; and (4) a period of depressed EEG activity after the seizure ends. Abbreviations: LT and RT, left and right temporal; LF and RF, left and right frontal; LO and RO, left and right occipital.