Brain imaging and neurophysiological methods have been rapidly
developed. The purpose of this book is to describe hearing problems
which are caused by various kinds of brain diseases in the central
auditory pathway. The book's most important feature is that anatomical
data of CT, MRI, and neuropathological and neurophysiological data of
ABR and MEG in patients are compared with neuropsychological data. The
book explains what happens to patients when the bilateral auditory nerve
and the auditory cortex are damaged. Some patients can hear but cannot
discriminate meanings of speech, music and environmental sounds. The
author tries to explain differences occur.