Complex sentence: They used recordings from the left mastoid, right mastoid, earlobes, nose, right sternoclavicular junction and vertibrae C7 to reference the EEG data, which they recorded while presenting faces, cars and words.
Split into simpler sentences: They used recordings from the left mastoid, right mastoid, earlobes, nose, right sternoclavicular junction and vertibrae C7 to reference the EEG data. Which they recorded while presenting faces, cars and words.