Objective To study the relationship between high/low stimulation rates ABR wave V latency differential and I-V inter-peak latency differential and potential utility of wave V latency differential in diagnosing posterior circulation ischemia when wave I is absent. Method Seventy five subjects(male=17, female=58, mean age=48.8 ± 10.4years, 150 ears) with normal high/low rate ABR I-V inter-peak latency differentials(≤0.28 ms) and 150 subjects(male=45, female=105, mean age=48.9 ±9.5 years, 150 ears) with abnorm...