AUTHOR=Thibaut Aurore , Zafonte Ross , Morse Leslie R. , Fregni Felipe TITLE=Understanding Negative Results in tDCS Research: The Importance of Neural Targeting and Cortical Engagement JOURNAL=Frontiers in Neuroscience VOLUME=11 YEAR=2017 URL=https://www.frontiersin.org/journals/neuroscience/articles/10.3389/fnins.2017.00707 DOI=10.3389/fnins.2017.00707 ISSN=1662-453X