EEG recordings of representative PND14 pups following DFP (A) or VX (B) administration. For A, the traces show the different stages of DFP-induced SE; (1) shows baseline, (2) indicates initiation of seizures, (3) shows SE, (4) indicates SE attenuation, (5) shows the return to baseline. The arrow indicates the time of DFP administration. PND14 pups treated with DFP had seizure activity that lasted <1 h. In B, 5 regions throughout the EEG record were expanded and illustrate that EEG activity did not change over time compared to baseline in response to VX administration (arrow). With the exception of one animal, PND14 pups exposed to sarin showed the same lack of change from baseline activity as those exposed to VX.