Table 1. Amplitudes, latencies and correlations thereof with BCI performance shown for N200 (minimal amplitude before latency of P300 on Cz), P300 (maximum between 250 and 700 ms on Cz) and late ERP component (maximum after P300 latency on POz).

	Amplitude (µV)	R auditory	R visual	Latency (ms)	R auditory	R visual
N200 (Cz)	−3.25 (SD 2.25)	0.37 (p = 0.02)	0.47 (p<0.01)	229.05 (SD 42.57)	−0.22 (p = 0.18)	0.04 (p = 0.81)
P300 (Cz)	4.99 (SD 2.66)	0.04 (p = 0.81)	−0.05 (p = 0.75)	378.00 (SD 89.00)	−0.32 (p<0.05)	0.07 (p = 0.65)
Late ERP (POz)	3.61 (SD 2.10)	−0.26 (p = 0.12)	−0.46 (p<0.01)	548.65 (SD 168.55)	0.07 (p = 0.66)	0.19 (p = 0.25)