[1] Vrije Univ Brussel VUB, Ctr Neurosci, NEUR Res Grp, Laarbeeklaan 103, B-1090 Brussels, Belgium
[2] Vrije Univ Brussel VUB, Ctr Neurosci, AIMS Res Grp, Laarbeeklaan 103, B-1090 Brussels, Belgium
[3] Vrije Univ Brussel, Dept Elect & Informat ETRO, Pleinlaan 2, B-1050 Brussels, Belgium
[4] Universitair Ziekenhuis Brussel UZ Brussel, Dept Neurol, Laarbeeklaan 101, B-1090 Brussels, Belgium
[5] Natl Multiple Sclerose Ctr, Vereeckenstraat 44, B-1820 Melsbroek, Belgium