In Musicophilia , the case histories of brain damage and its effect on different aspects of musical memory and functions, Oliver Sachs tells that those different aspects are related to different parts of the brain for specific details such as absolute pitch, amusia and more.
He refers to language and vision as having, equally, separate specific parts for different aspects in those fields. (memory and functions). Also that other parts of the brain may take over parts of lost functions . /Shiftings. But he as a dedicated and expert neurologist admits that many mysteries of the brain remain as yet hidden.