[Changes in the EEG in the course of therapy with lithium salts].

The effect of lithium during chronic treatment on the EEG. has been studied in 21 subbjects affected by manic-depressive psychosis. The relation between lithiemic values and EEG. modification has been discussed from varius points of view, considering records of what has been observed in the present research and what reported in literature. The mean hematic lithium level has been considered insufficient to obtein the essential informations. The determination of the intracellular lithium concentration may be a more informative one.