- Children devoid of neurological pathology making him(it) clinically unstable (echography transfontanellar and\or intellectual MRI, electroencephalogram normal, either, intraventricular bleeding of rank 1 and 2 of Papile [40], or, intellectual abnormalities in the MRI of type(chap) 1 - 4 according to the classification of modified Paneth [41]. (Annex X)