Vergnes M, Marescaux C, Depaulis A, Micheletti G, Warter J M
Brain Res. 1986 Nov;395(1):85-7. doi: 10.1016/s0006-8993(86)80011-7.
Wistar rats spontaneously presenting electroclinical signs of petit mal-like epileptic seizures were inbred until all offspring were affected, and the ontogeny of this inherited phenotype was studied in the offspring from 30-60 days of age to 18 months. The first EEG spike and wave discharges appeared at 40-120 days. Their number and duration increased progressively with age.
