[Luria's Classification of Aphasia: Its Theoretical Background]

This article highlights the little-known theoretical foundations and background of Luria's theory of aphasia and the various aphasia types. Certain aphasia types, such as dynamic aphasia and semantic aphasia, are unique. Dynamic aphasia is based on the linguistic theory of "linear schema," while semantic aphasia is based on the theory of higher neural activity in the semantic field, known as the "equal phase." I would like to emphasize that Luria's theory of aphasia draws on the Russian psychology of Vygotsky and others, as well as Pavlov's theory of higher neural activity.