This data package contains the data described in the article "Event-related potentials and oscillatory brain activity reflect a complex interplay of syntactic, semantic and pragmatic information during the processing of German discourse particles" by Mariya Kharaman, Anna Czypionka and Carsten Eulitz, published in Glossa psycholinguistics in 2025. It contains (a) data for the presented ERP analysis, i.e., the mean ERP amplitudes for each participant and condition in the time windows analysed in the paper, and (b) data for the time-frequency analysis, i.e., z-transformed t-values from four different pairwise comparisons for the entire epoch for each participant and different frequency bands. The readme file gives a more detailed description. For a thorough description of the experimental conditions, stimuli, and considerations for analysis, please refer to the mentioned article.