This repository contains EEG and audio data used and described in: Hjortkjær, J, Märcher-Rørsted, J, Fuglsang, SA, Dau, T (2018). Cortical oscillations and entrainment in speech processing during working memory load. European Journal of Neuroscience. doi:10.1111/ejn.13855 Please cite this article when using the data The MAT-files contain the aligned EEG and audio data for each subject (N=22). The envelopes of the speech audio (without noise) have been extracted as described in the paper. Each file (data_N.mat) contains a Matlab struct in the format of the Fieldtrip toolbox containing the following fields: data.trial: EEG and audio data for all 40 trials [channels x timepoints] channels 1-64: scalp EEG channel 65: left mastoid electrode channel 66: right mastoid electrode channel 67: horizontal EOG channel 68: vertical EOG for left eye channel 69: vertical EOG for right eye channel 70: audio envelopes data.trialinfo: Experimental condition in each trial 1 = low noise, 1-back 2 = low noise, 2-back 3 = high noise, 1-back 4 = high noise, 2-back data.time: Sample indices for each trial in seconds data.label: Name of each channel in data.trial data.fsample: EEG/audio sampling rate in Hz (128)