Answer
Answer 6-1. It is nearly impossible to cause loss of hearing in one ear by damage to the brain after the point at which the vestibulocochlear nerve enters the brain. This is because the distribution of hearing is bilateral at all levels of the central nervous system auditory pathway. Localization of sound may be slightly affected by auditory cortex lesions. In fact it is nearly impossible for central nervous system lesions to cause clinically detectable hearing loss and if these is hearing loss you must look at the conductive system, the inner ear and the vestibulocochlear nerve.