This data set contains the raw EEG data from each participant and the stimuli file. Each participant is assigned an ID, from d1 to d50 (there is no data for participant d14). Data from participants d1, d2, d6, d13, d16, d17, d23, d24, d26, d34, d37, d41 and d45 were excluded from analyses due to artefacts. Information about the experimental items (about stimulus markers, experimental lists, and randomisation) is in the Excel file named "Dialogue_exp1_stimuli".