AUTHOR=Moustafa Ahmed A. TITLE=Motor and cognitive changes in normal aging JOURNAL=Frontiers in Aging Neuroscience VOLUME=6 YEAR=2014 URL=https://www.frontiersin.org/journals/aging-neuroscience/articles/10.3389/fnagi.2014.00331 DOI=10.3389/fnagi.2014.00331 ISSN=1663-4365