Table 4.

Parameters of the evaluation criteria $E_c$.

Parameter	Value	Reason
$ITR$	Computed according to the equation (Equation (1)).	The ITR takes into consideration the system accuracy and the timing, which represent two criteria from the predefined criteria and are important to evaluate the EBCI systems.
$\alpha$	=1/3, if the EBCI system is controlled by the evoked potential signals.	The EBCI system is more comfortable when it is controlled by SP. Thus, we are given the highest weight for the EBCI system controlled by SP.
	=2/3, if the EBCI system controlled by the spontaneous signals (SP).
$\beta$	=1/3, if the EBCI system is static (same parameters for all subjects).	The EBCI system is more accurate when the EBCI parameters are defined for each subject. Thus, the highest weight is given for the EBCI system toke in consideration the inter-subject variability.
	=2/3, if the EBCI is adaptive.
$\gamma$	=1/3, if the EBCI system is checked and validated according to the offline approach only.	The accuracy of the EBCI system is validated according to the online approach and is more reliable which reflects the usefulness of the EBCI system.
	=2/3, if the EBCI system is checked and validated according to the online approach.
$P_w$	The measured power of the EBCI system.	One of the important criteria to evaluate the EBCI systems.
$N_{ch}$	Number of channels that is used during the recording of the brain signals.	The number of channels differ from one system to another and has an effect on the runtime and the power consumption. For this reason, it should be taken into consideration during the comparison between EBCIs.