Investigating colour’s effect in stimulating brain oscillations for BCI systems

This paper investigates the quality and robustness of the electroencephalograph (EEG) signals elicited by various colour combinations using Steady State Visual Evoked Potential (SSVEP). The results from various colour flickers were compared against black and white flicker. The flickers have been designed and rendered in Adobe After Effects software. 10Hz flickers were tested using 3 subjects, 2 computers and Emotiv EPOC headset. Signal acquisition was performed using EmotivXavierTestBench application and its analysis was carried out using MATLAB with EEGLAB. All the colour flickers produced very strong and useable SSVEP signals.