AUTHOR=Waldert Stephan TITLE=Invasive vs. Non-Invasive Neuronal Signals for Brain-Machine Interfaces: Will One Prevail? JOURNAL=Frontiers in Neuroscience VOLUME=10 YEAR=2016 URL=https://www.frontiersin.org/journals/neuroscience/articles/10.3389/fnins.2016.00295 DOI=10.3389/fnins.2016.00295 ISSN=1662-453X