Gas Levels in 3 Phases of Seizure Event (IMAGE) Institute for Basic Science Caption Figure 3 shows representative signal changes of localized field potential (LFP), NO, and CO responding to epileptic seizures simultaneously monitored at the brain layer 5 within brain cortical tissue. Three stages of seizures, initiation, propagation, and termination, were marked with vertical dashed lines. Credit IBS Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.