1. Assuta Medical Centre, Imaging Unit , 6971028 Tel Aviv , Israel
2. Assuta Medical Centre, Functional Neurosurgery Unit , 6971028 Tel Aviv , Israel
3. Department of Cognitive and Brain Sciences, Ben-Gurion University of the Negev , 8410501 Be’er Sheva , Israel
4. Department of Psychology and Education, The Open University of Israel , 4353701 Ra’anana , Israel
5. Assuta Medical Centre, Pain and Anaesthesia Unit , 6971028 Tel Aviv , Israel
6. Neurology, Johns Hopkins University , Baltimore, MD 21218-2683 , USA