Ivan Petrovic PAVLOV (1849-1936) Russian physiologist. In the photography it is portrait with its group of search and the dog on which the comp?experiments that carried to discover it the conditioned glares. Nobel prize in 1904. Its experiments on the dogs; realized between 1911 and 1926; involved the study of the main ones modificaz韔ni connected to the "partial sleep" of the animal and the various procedures in order to obtain it. On the base of such observations it advanced a physiological explanation of the ipnosi centered on the concepts of inhibition and conditioned glare; arriving to the formulation of that which still today the more important is considered physiological interpretation of the ipnotici phenomena; that is that the suggestion is a conditioned glare; indeed "simpler the conditioned glare; more typical of the man".