Table 1.

Summary of wearable EEG devices and corresponding BCI applications in medical field

Reference	EEG device	EEG recorded	Electrode type	Recording channels	BCI applications
Emotiv SystemsCompany, USA	Emotiv EPOC	Scalp-EEG	Semi-dry electrode	14	Rehabilitation therapy [40–42] Equipment control [43–48]
Wearable SensingCompany, USA	DSI-24	Scalp-EEG	Dry electrode	21	Rehabilitation therapy [50,52,53] Equipment control [54]
OpenBCICompany, USA	OpenBCI Ultracortex “Mark IV”	Scalp-EEG	Dry electrode	16	Equipment control [60–62] Rehabilitation therapy [63]
National Chiao Tung University, CHN	Mindo 4S EEGdevice	Forehead-EEG	Dry electrode	4	Health monitoring [64]Disease management [64] Rehabilitation therapy [64,66] Equipment control [65,67]
MacrotellectCompany, CHN	BrainLink Lite	Forehead-EEG	Dry electrode	3	Disease management [69] Rehabilitation therapy [70,71]
NeuroSkyCompany, USA	MindWaveMobile	Forehead-EEG	Dry electrode	1	Rehabilitation therapy [76] Communication assistance [77] Equipment control [78–81]
Debener et al. [91] and TSMi, NLD	cEEGrid	Ear-EEG	Wet electrode	10	Communication assistance [95,96] Disease management [97,98]
Kaongoen et al. [101]	Custom-made headphone	Ear-EEG	Semi-dry electrode	8	Equipment control [101]