Studies carried out on neurons of Torpedo M. showed that copper creates an action of cellular damage inducing the synthesis of free radicals. Two groups of Torpedo, one for the control and the other one treated with dihydrodinoreburnameninol, were kept in sea water containing CuCl2. Then the measurement of the electric discharge was made: it was observed a clear dicrease in the Torpedo kept in conditions of pollution from copper, while the administration of dihydrodinoreburnameninol showed a protective action on the damaging effects.