1. Department of Neurosurgery, National & Kapodistrian University of Athens, Athens, Greece
2. Laboratory of Cognitive Neuroscience, Department of Psychology, Aristotle University of Thessaloniki, Thessaloniki, Greece
3. Department of Technologies, Communication and Society, University of Rome G. Marconi, Rome, Italy
4. Department of Speech and Language Therapy, School of Health Sciences, University of Ioannina, Ioannina, Greece