Figure 4.

Seizure duration in relationship to recording time and injury severity. (A) Graph showing the average duration of the first seizure (red line) and the last three recorded seizures (blue line) for the injured rats in the early, intermediate, and late recording groups. The average duration of the first seizure recorded was significantly longer in the late group compared with the early group (#p < 0.05). The average duration of the last three seizures recorded was significantly longer than the first seizures recorded in the intermediate group (*p < 0.05), an effect not seen in the early or late groups. (B) Histogram showing the proportion of seizures of different durations in the mild (green), moderate (blue), and severe (red) injury groups. Rats had longer duration seizures after a more severe head injury. In the mild injury group the majority of seizures were of short duration, lasting <20 s. In the moderate injury group there was a larger proportion of seizures lasting >20 s, although there were still few seizures lasting >1 min. In the severe injury group there were even more seizures lasting longer than 20, 30, and even 60 s.

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