Table 1.

Performance (Accuracy, ITR ¹) of steady SSVEP ² according to conditions (used number of channels, epoch period).

Condition	SSVEP	S1	S2	S3	S4	S5	Average
1 channel 3 s	Accuracy (%)	60.00	60.00	86.67	73.33	76.67	71.33
	ITR (Bit/min)	11.02	11.02	29.78	19.04	21.43	18.46
3 channels 3 s	Accuracy (%)	60.00	73.33	76.67	70.00	73.33	70.67
	ITR (Bit/min)	11.02	19.04	21.43	16.81	19.04	17.47
1 channel 4 s	Accuracy (%)	66.67	63.33	93.33	83.33	80.00	77.33
	ITR (Bit/min)	11.06	9.61	27.53	20.08	18.00	17.26
3 channels 4 s	Accuracy (%)	83.33	73.33	93.33	83.33	83.33	83.33
	ITR (Bit/min)	20.08	14.28	27.53	20.08	20.08	20.41

¹ ITR: Information transfer rate. ² SSVEP: Steady state visual evoked potential.