| Component | Electrodes | Time intervals (epochs) peaks | |
| Pictures | Words | ||
| N100 | PO3, PO4, Pz, P3, P4 | 50 - 160 msec | 50 - 100 msec |
| N400 | Cz, FCz, AFz, FC1, FC2 | 400 - 500 msec | 300 - 500 msec |
| P600 | Cz, CPz, CP1, CP2, P1,P2 | 500 - 700 msec | 500 - 700 mesc |