Long-Term Experiments

In this chapter, two studies will be presented. In both experiments, the presented videos have a length of standard documentaries (i.e. 40–60 min). The goal is to gain insights into how quality degradation is affecting the observer’s mental state on continuous video material. Therefore, analysis of alpha band power, and other peripheral parameters is performed. In order to embed these measures, the mental state is introduced to the original model of the quality formation process (see Fig. 4.1). The mental state can be analyzed using spectral analysis of the recorded EEG signal. The relationship between the perceived quality and the mental state will be analyzed within this chapter.