 Three weeks after the initial examination, all subjects will be invited to participate in a follow-up session at the Cognitive Neurophysiology Lab at Ben Gurion University of the Negev regardless of the treatment they were participating in during this period. At this point all subjects will be kindly asked to sign a new informed consent so that there will be no obligatory relationship been participating at the first phase and at follow-up of the experiment. Also, the subjects treatment between the sessions will be determined by the patients attending physician without the intervention of the research team. 