1. Department of Speech and Language Therapy, School of Health Sciences, University of Ioannina, Ioannina, Greece
2. B' Department of Neurology, Multiple Sclerosis Center, AHEPA University Hospital, Aristotle University of Thessaloniki, Thessaloniki, Greece
3. Department of Neurology, University Hospital of Larissa, School of Health Sciences, University of Thessaly, Larissa, Greece
4. Department of Mechanical Engineering and Aeronautics, University of Patras, Patras, Greece
5. Lab of Cognitive Neuroscience, School of Psychology, Aristotle University of Thessaloniki, Greece
6. Communication Sciences and Disorders, School of Health Sciences, The University of Sydney, Australia, and
7. Department of German Language and Literature, Aristotle University of Thessaloniki