1. Laboratory for Cognition and Neural Stimulation, Neurology Department, School of Medicine, University of Pennsylvania, 3710 Hamilton Walk, PA, Philadelphia
2. Clinical Neuropsychology Unit, Rehabilitation Department, Hospital S. Antonio Abate Gallarate, Varese, Italy
3. Human Cognitive Neuroscience, Psychology, University of Edinburgh, UK
4. Center of Cognitive Ageing and Cognitive Epidemiology, University of Edinburgh, UK