Three groups are presented comparing animals with large differences in seizure frequency [group 1, animal 2 vs 1 (0.1 vs 0 seizures/d); group 2, animal 3 vs 2 (0.64 vs 0.1 seizures/d); group 3, animals 4–9 vs 3 (>2 vs 0.64 seizures/d)]. Up arrows denote parameters that improved with increasing seizure frequency (50% decrease in severity or more), and down arrows denote parameters that became more severe with increasing seizure frequency (50% increase in severity or more). BD, Basal dendrites.