Figure 4. Reference monopolar interictal recording of paroxysmal discharges (arrows) in all leads. Frontal leads frequently showed the discharges (open arrows); parietal and temporal ones also showed discharges. This 18-month-old, female dog (dog 10) had generalized seizures at irregular intervals during the previous 2 wk. Calibration marks indicate 50 μV and 1 s. See Figure 1 for legend for electrodes.