“…To overcome these challenges, recent efforts have been made to combine EEG and fNIRS into bimodal systems able the simultaneously record the hemodynamic and electrophysiological correlates of human performance in real time (Safaie et al, 2013 ; Tomita et al, 2014 ; Hong and Khan, 2017 ; von Luhmann and Muller, 2017 ; Hong et al, 2018 ). Indeed, besides improving the signal-to-noise ratio by representing brain activity in different formats (Sun et al, 2020 ), combined EEG and fNIRS signals have the potential to significantly compensate for each other's spatial and temporal limitations, thereby increasing the speed, precision, and richness of mental state decoding in various tasks of interest to human factors (Wallois et al, 2010 , 2012 ; Nguyen et al, 2012 , 2017 ; Tomita et al, 2014 ; Kaewkamnerdpong, 2016 ; Balconi et al, 2017 ; Pinti et al, 2018b ; Dehais et al, 2019 ; Firooz and Setarhdan, 2019 ). They may ultimately provide motor-disabled individuals with the means to interact with their environment and optimize the detection of mental workload, drowsiness, or brain dysfunction in various high-risk situations.…”