Pentylenetetrazole kindling impairs learning in mice.

Repeated administration of 35 mg/kg body weight pentylenetetrazole (PTZ) induced a kindling phenomenon and an impairment of inhibitory avoidance learning. In contrast, a single administration of the same dose PTZ had no effect on learning. Kindled mice showed impaired habituation of exploratory activity. The results may be of relevance for antiepileptic drug testing.