One reason, is that our design includes an inter-trial of 2.5 s to allow the subject to check the output of last step and acknowledge the next figure to type. We could have asked our participant to memorize the four digits to type or have them cued and removed the classification feed...
referred to as PC1 in Fig.1. The protocol displayed the visual cues to the participants in the Graphic User Interface (GUI). The screen’s background was light-grey coloured in order to prevent dazzling and eye fatigue.
The states from the FP2 sensor, which was located on the front right side of the neocortex, had the least variability. It is difficult to say what exactly is the reason for such a reaction in the right frontal lobe (this reaction requires additional research). ...