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The scope of this thesis is to elaborate on the use cases of the EEG in pain research. It has been submitted as a cumulative dissertation, meaning that the main part of this thesis has been previously published in international peer-reviewed journals. The first part of this thesis begins with an introduction which describes the general methodoligcal considerations and theoretical background information that is needed to perform pain research using the EEG. Then, I will give a summary of the results of all three studies and the subsequently published manuscripts. The discussion will give an outlook on two ongoing projects and elaborate how the methodology that has been compiled throughout my time as a PhD student can be further applied to scientific problems in pain research. I will conclude with the possibilities and the limitations of the EEG in pain research. The second part of this thesis consists of three publications that cover three individual studies, of which I am the lead/first author. These publications describe different use cases for the EEG in pain research. The first publication lays out the methodological backbone of this thesis, analyzing the exact EEG parameters that are needed to achieve the results in the following projects. Then, I present two additional studies. The first study describes the usefulness of pain-related evoked signatures after standardized noxious stimulation in the EEG in patients undergoing general anesthesia. The second study outlines differences in the pain processing of elite endurance athletes versus a normally active control group. Furthermore, it outlines how the function of the endogenous pain modulatory system can be measured in the EEG using CPM. All studys are discussed individually as per the journal guidelines.