AUTHOR=Chalah Moussa A. , Palm Ulrich , Ayache Samar S. TITLE=Editorial: Corticospinal Excitability in Patients With Multiple Sclerosis JOURNAL=Frontiers in Neurology VOLUME=11 YEAR=2021 URL=https://www.frontiersin.org/journals/neurology/articles/10.3389/fneur.2020.635612 DOI=10.3389/fneur.2020.635612 ISSN=1664-2295