“…In the presence of pathologic processes affecting the brain stem auditory pathways, a prolongation of latencies or loss of these potentials related to the affected level are expected (Jewett et al, 1970;Moller and Jannetta, 1982). Previous studies have reported that the BAEP are influenced by various diseases affecting the central nervous system, particularly in the presence of brain stem involvement (Litscher et al, 1996;Prasher and Bannister, 1986). Increases in absolute and IPL, increases in duration of the waves, and decreases in amplitude of the waves suggest axonal demyelization or asynchronization at the axonal or synaptic levels (Rosenhall et al, 2003).…”