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An essential difference is established between the dorsal, and ventral regions of the cerebral cortex: While dorsal cortex--linked to archicortex or hippocampal allocortex--elaborates acts, and objects used in, or by, acts, ventral cortex--linked to paleocortex or olfactory allocortex, builds up preventive values favoring the inhibition of acts whenever the use of objects may become dangerous. Such a distinction between the dorsal and ventral regions of the cerebral cortex is founded mainly on disinhibition syndromes appearing in patients with ventral lesions--besides, the said distinction can explain some disinhibition demonstrations included in the schizophrenic clinical pictures.
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