ABSTRACT
We will dispense with a history of the theory of localization outside the periphery of the cortex since Broca and Wernicke. This topic concerns the field of aphasia which has always been the focus of discussions. Indeed, it is from these discussions that critical issues have emerged. Isserlin has summarized all of the important matters in this handbook. Aside from aphasia, the other types of “asymbolia” (Finkelnburg), and in particular disorders in object identification, considered by Freud (1891) to be types of agnosia, have for a long time played only a modest role in localization theories. Liepmann’s development of the modern concept of apraxia has nevertheless revived localization theory in contexts other than aphasia research and very recently, the different types of agnosia have played a more significant role as well.
