There is no more fascinating subject in the whole of medicine than the study of the activities of the human brain. This topic has engaged the interests of some of the best workers in medicine—anatomists, physiologists, clinicians, pathologists, experimental workers, psychologists—especially during the last hundred years. Really great progress has been made, but, despite the advances, we are still only at the threshold of the knowledge of many of the cerebral functions.
We use the term "localization" in somewhat different ways. Thus, we think of localization of function, we think of localization of lesions in certain diseases, and, again, we