There are two versions of data (.mat format) for each participant.  The Otask files contain ERPs from the object task.  The Ftask files contain ERPs for the function task.  Each file consists of a 3D matrix, with rows = electrodes (128 total), columns = time (600 timepoints), and planes = stimuli (80 in total).  Note that the baseline data are included, so columns 100-600 correspond to 0-500 post-stimulus onset.  The two pAVG files are the participant averaged data, and are what was used to train the network.