Virtual and Actual Humanoid Robot Control with Four-Class Motor-Imagery-Based Optical Brain-Computer Interface

Figure 6

Example of data analysis for a representative trial. Data from a single optode showing the original HbO and HbR signals (a), the data after filtering (b), and after applying CAR and baseline correction (c). Resting periods before and after the task are shown by gray boxes.

(a)

(b)

(c)