Observation of the effect of the increase in luminance level on emotional assessment in EEG records using Welch method.

The aim of this study is to investigate the effect of the difference in level of luminance of visual stimuli on the emotional evaluation (negative, positive, neutral) from electroencephalogram (EEG) data recorded. EEG records of 31 healthy individuals were used in the study. These records were analyzed on the frequency domain using the Welch method and the features obtained after the analysis were evaluated statistically. According to the results of the evaluation, it was seen that there was a comparable difference between the reaction of individuals to the bright photographs with increased luminance level and the reaction of individuals to the original photographs, and it is revealed that this difference is spatially observed in which electrode region and in which frequency bands.