We investigated whether a consumer-grade mobile EEG system such as the MUSE device can be used for online EEG experiments. Five students participated in an online experiment where (1) two minutes of resting state EEG was recorded and (2) students performed a flanker task while recording the EEG. For comparison, the same paradigms were also performed with a standard 32-channel EEG system in our EEG laboratory. Analysis of resting state data revealed expected alpha peaks in both settings with a reduced alpha peak in the MUSE data. In the flanker experiment, stimulus-locked ERP components were less expressed in the MUSE data, still the N200 was clearly visible for the correct trials as in the standard EEG data. In the incorrect trials, time-locked to the response there was the same negative Ne component visible in the MUSE data as for the standard experiment. Our results herewith reveal that the Muse devices are suitable to obtain event-related potentials in online settings β even from interpolated electrode channels