AUTHOR=Production Office Science TITLE=Erratum: In vivo comparison of the charge densities required to evoke motor responses using novel annular penetrating microelectrodes JOURNAL=Frontiers in Neuroscience VOLUME=9 YEAR=2015 URL=https://www.frontiersin.org/journals/neuroscience/articles/10.3389/fnins.2015.00271 DOI=10.3389/fnins.2015.00271 ISSN=1662-453X