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1 Define Localisation of Function (LOF). 2  LOF is the theory that certain areas of the brain correspond to certain functions; in that specific areas of the brain control different functions carried out by the brain. 3  It refers to the idea that behaviour, emotions and thoughts originate in the brain in specific locations.
Freebase(0.00 / 0 votes)Rate this definition: Externalization. Externalization means to put something outside of its original borders, especially to put a human function outside of the human body. The opposite of externalization is internalization. In a concrete sense, by taking notes, we can externalize the function of memory which normally belongs in the brain.