AUTHOR=Shpektor Anna , Bartrés-Faz David , Feurra Matteo TITLE=Commentary: Duration-dependent effects of the BDNF Val66Met polymorphism on anodal tDCS induced motor cortex plasticity in older adults: a group and individual perspective JOURNAL=Frontiers in Aging Neuroscience VOLUME=7 YEAR=2015 URL=https://www.frontiersin.org/journals/aging-neuroscience/articles/10.3389/fnagi.2015.00183 DOI=10.3389/fnagi.2015.00183 ISSN=1663-4365