[Structural organization of the cetacean neocortex].

As a result of investigation on architectonics of structural organization of the brain neocortex in dolphin, frontal, parietal, temporal and occipital regions, as well as certain fields were distinguished. Monotonous character and incomplete stratification of the neocortical lamina, lack of clear border line and similarity with interstitial formations demonstrate symbolic meaning of the word neocortex as it is applied to the cetacean brain. Therefore, the term preneocortex is suggested for the dolphin brain.