Investigating brain signal peaks vs electroencephalograph electrode placement using multicolour 10Hz flickering graphics stimulation for Brain-computer Interface development

摘要

This paper investigates brain signal peaks and their relationship to electroencephalograph (EEG) electrode placement elicited by various multicolour stimuli flickering graphics using Steady State Visual Evoked Potential (SSVEP) paradigm. 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 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 10Hz peaks in channels 1 (AF3), 3 (F3), 12 (F4) and 14 (AF4).