@misc{10481/57356,
year = {2019},
month = {6},
url = {http://hdl.handle.net/10481/57356},
abstract = {The functional validity of the signal obtained with low-cost electroencephalography (EEG)
 devices is still under debate. Here, we have conducted an in-depth comparison of the EEG-recordings
 obtained with a medical-grade golden-cup electrodes ambulatory device, the SOMNOwatch +
 EEG-6, vs those obtained with a consumer-grade, single dry electrode low-cost device, the NeuroSky
 MindWave, one of the most a ordable devices currently available. We recorded EEG signals at Fp1
 using the two di erent devices simultaneously on 21 participants who underwent two experimental
 phases: a 12-minute resting state task (alternating two cycles of closed/open eyes periods), followed by
 60-minute virtual-driving task. We evaluated the EEG recording quality by comparing the similarity
 between the temporal data series, their spectra, their signal-to-noise ratio, the reliability of EEG
 measurements (comparing the closed eyes periods), as well as their blink detection rate. We found
 substantial agreement between signals: whereas, qualitatively, the NeuroSky MindWave presented
 higher levels of noise and a biphasic shape of blinks, the similarity metric indicated that signals from
 both recording devices were significantly correlated. While the NeuroSky MindWave was less reliable,
 both devices had a similar blink detection rate. Overall, the NeuroSky MindWave is noise-limited,
 but provides stable recordings even through long periods of time. Furthermore, its data would be of
 adequate quality compared to that of conventional wet electrode EEG devices, except for a potential
 calibration error and spectral differences at low frequencies.},
organization = {Spanish Department of Transportation, Madrid, Spain (Grant No.
SPIP2014-1426 to L.L.D.S.)},
organization = {A.C. is funded by a Spanish Ministry of Economy and Competitiveness
grant (PSI2016-80558-R to A.C.)},
organization = {S.R. is funded by an Andalusian Government Excellence Research
grant (P11-TIC-7983)},
organization = {L.J.F. is funded by a Spanish Ministry of Economy and Competitiveness grant
(PSI2014-53427-P) and a Fundación Séneca grant (19267/PI/14)},
organization = {L.L.D.S. is currently supported by the
Ramón y Cajal fellowship program (RYC-2015-17483)},
organization = {C.D.-P. is currently supported by the CEIMAR
program (CEIMAR2018-2)},
organization = {C.D.-P. and L.L.D.S. are supported by a Santander Bank—CEMIX UGR-MADOC grant
(Project PINS 2018-15)},
publisher = {Sensors},
keywords = {brain activity},
keywords = {Electroencephalography},
keywords = {driving simulator},
keywords = {low-cost wearables},
keywords = {NeuroSky® MindWave Mobile headset},
title = {Validation of Electroencephalographic Recordings Obtained with a Consumer-Grade, Single Dry Electrode, Low-Cost Device: A Comparative Study},
doi = {10.3390/s19122808},
author = {Rieiro, Héctor and Díaz Piedra, Carolina and Morales, Jose Miguel and Catena Martínez, Andrés and Romero García, Samuel Francisco and Roca González, Joaquín and Fuentes, Luis J. and Di Stasi, Leandro Luigi},
}