Steady-State Visual Evoked Potential based Brain Computer Interface: Experiment of LED stimulation in two-rooms condition

The aim of this study is to determine the effect of room's light condition to brain response. Brain response to repetitive visual stimulation is called Steady-State Visual Evoked Potential (SSVEP) based Brain-Computer Interface (BCI). In this study, flickering Light Emitting Diode (LED) is used as visual stimulation. Mostly, brain response is recorded using electroencephalograph (EEG) and recorded in the brain's occipital lobe that is associated with human vision. Welch's method of power spectral estimation is implemented for estimating the power spectral of recorded signal. The result shows that the highest-power of brain response to repetitive visual stimulus can be detected either in the dark-room or in the bright-room.