 EEG recordings will take place at both the initiation and at the end of the research protocol. We will use the EGI Geodesic Sensor net 128 electrodes and system for data acquisition Electrical Geodesics, Oregon, USA. All equipment and materials that will be used are FDA approved for clinical and research use and are been routinely applied on patients, children and infants therefore can be considered safe. During all procedures the use of the equipment will be according to the manufacturers instructions only. 