| EEG abnormality |
No of patients |
| Temporal sharp wave discharges |
7 |
| Centero-temporal spikes |
6 |
| Occipital spikes/spike-waves |
6 |
| Generalized slowing |
4 |
| Focal slowing |
4 |
| Frontal sharp wave discharges |
3 |
| 3Hrz/s spike & wave activity |
1 |
| Central epileptic discharges |
1 |
| Generalized high spike/waves |
1 |
| Fronto-temporal sharp waves |
1 |
| Runs of sharp delta |
1 |
