 The EEG-NF training will be alphatheta EEG, as specified earlier. Each subject will be connected to an EEG device continuously registering his hers brainwave activity. The alphatheta ratio will be computed online and will be translated to the subject as a sound. A decrease in the ration, implicating relaxation, will lead to a decrease in the sounds volume. The subject will be asked to continue and soften the sound by relaxing. Each meeting will last twenty minutes. 