Table 1.

Comparison between other BCI systems and the proposed BCI.

	Lan et al. [12]	Arvaneh et al. [13]	Pfurtscheller et al. [27]	Kus et al. [28]	Obermaier et al. [29]	Proposed BCI
Accuracy (%)	80	81/82	65	74.8	-	71.1
Bit rate(bits/min)	-	-	-	4.5	3.1	3.2
EEG features	Power spectral density	Common spatial pattern	Band power estimation	Spectral power estimation	EEG Pattern	EEG Power
Number of EEG channels	32	22/118	32	-	29	8
Function of channel selection	Yes	Yes	No	No	No	Yes
EEG sensor	EEG cup electrode	EEG cup electrode	EEG cup electrode	EEG cup electrode	EEG cup electrode	Noevl dry electrode
Main computing unit	Back-end computer	Back-end computer	Back-end computer	Back-end computer	Back-end computer	Front-end wearable EEG device
Wearable system	No	No	No	No	No	Yes
Wireless transmission	WiFi	No	No	No	No	Bluetooth