Table 1.

Overview of the features of the commercially available wireless and wearable fNIRS systems (adapted from Quaresima and Ferrari (2016)).

Device	Company, Country	Probed brain region	Fibreless	Wavelengths	SD separation
Brite23	Artinis, The Netherlands	Whole PFC		760, 850 nm	35 mm
OctaMon	Artinis, The Netherlands	PFC		760, 850 nm	35 mm (26 mm for babies)
PortaLite	Artinis, The Netherlands	Custom		760, 850 nm	30, 35, 40 mm
Hb-13N	Astem, Japan	PFC	X	770, 830 nm	2, 4, 20, 30 mm(spatially resolved)
Pocket NIRS HM	Dynasense Inc., Japan	PFC	X	735, 810, 850 nm	30 mm
fNIRS Imager 1200M	fNIRS Devices LLC., USA	PFC	X	730, 850 nm	2.5 mm
WOT-100	Hitachi, Japan	PFC	X	705, 830 nm	30 mm
WOT-220	Hitachi, Japan	PFC	X	705, 830 nm	30 mm
WOT-HS	Hitachi, Japan	PFC	X	705, 830 nm	21.2, 30 mm
HOT-1000	Hitachi, Japan	PFC	X	810 nm	10, 30 mm
Genie	MRRA Inc., USA	INF	INF	700, 850 nm	DOT
NIRSport	NIRx Medical Technologies, LLC, USA	Custom		760, 850 nm	Custom
NIRSIT	Obelab, Korea	PFC	X	780, 850 nm	15, 21.2, 30, 33.5
LIGHTNIRS	Shimadzu, Japan	Custom		780, 805, 830 nm	30 mm
SPEEDNIRS	Shimadzu, Japan	Custom		780, 805, 830 nm	30 mm
OEG-16	Spectratech Inc., Japan	PFC	X	770, 840 nm	30 mm
OEG-16 ME	Spectratech Inc., Japan	PFC	X	770, 840 nm	30 mm
OEG-17APD	Spectratech Inc., Japan	Custom		770, 840 nm	30 mm
OEG-SpO2	Spectratech Inc., Japan	PFC	X	770, 840 nm	30 mm
Techen Wireless	TechEn Inc., USA	INF	INF	INF	INF

Note. Abbreviations: SD= source-detector; PFC = Prefrontal cortex; DOT = Diffuse optical tomography; INF= Information not found.