Miller KJ, Schalk G, Fetz EE, den Nijs M, Ojemann JG, Rao RPN. Cortical activity during motor execution, motor imagery, and imagery-based online feedback. Proc Natl Acad Sci U S A [Internet]. 2010;107(9):4430-5. http://www.ncbi.nlm.nih.gov/pubmed/20160084

Cincotti F, Mattia D, Aloise F, Bufalari S, Schalk G, Oriolo G, et al.. Non-invasive brain-computer interface system: towards its application as assistive technology. Brain Res Bull [Internet]. 2008;75(6):796-803. http://www.ncbi.nlm.nih.gov/pubmed/18394526

Wisneski K, Anderson NR, Schalk G, Smyth M, Moran D, Leuthardt EC. Unique cortical physiology associated with ipsilateral hand movements and neuroprosthetic implications. Stroke [Internet]. 2008;39(12):3351-9. http://www.ncbi.nlm.nih.gov/pubmed/18927456