The electroencephalographic findings in 65 patients with convulsive disorders occurring during the first year of life were analysed. Abnormal EEG tracings were recorded in 55 patients (84.5%). Focal sharp waves were recorded in 27 (41.5%); focal spike waves in 3 (4.6%); delta waves in 27 (41.5%); disorganization (big build-up) of the electrical activity in 3 (4.6%); depression of the cerebral rhythms in 7 (10.7%) and hypsarrhytmic patterns activity in 2 patients (3%). Some considerations are made in regard to the mechanisms of the spread of the original discharges, as well as the electroclinical correlation.