Proficiency in motor imagery is linked to the lateralization of focused ERD patterns and beta PDC.

Background: Motor imagery based brain-computer interfaces (MI-BCIs) are systems that detect the mental rehearsal of movement from brain activity signals (EEG) for controlling devices that can potentiate motor neurorehabilitation. Considering the problem that MI proficiency requires training and it is not always achieved, EEG desirable features should be investigated to propose indicators of successful MI training.

Methods: Nine healthy right-handed subjects trained with a MI-BCI for four sessions.