Investigating the brain during human movement is still extremely challenging. The most promising technique is electro-encephalography or EEG, however it is known that even a blink of an eye distorts the signal. For years human movement scientists have been exploring different pre-processing techniques to remove movement-induced noise. In light of all existing techniques an overview is recently published and guidelines are formulated, as such researchers can opt for an optimal strategy to remove artifacts or data coming from non-brain sources.
Link to the paper: Removal of movement-induced EEG artifacts: current state of the art and guidelines - IOPscience