This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: JIPMER 2018, Subject name: ENT
Findings of BERA in vestibular schwannoma:- 
Select and explain. 
A. Increased latency in waves I-V, B. Decreased latency in waves I-V, C. Increased latency in waves VI-VII, D. Decreased latency in waves VI-VII
A: Increased latency in waves I-V
Answer: A: Increased latency in waves I-V 
Explanation: In vestibular schwannoma, there is increased latency in wave 1 -5 Waves of BERA: E- wave 1: Distal pa of 8th nerve. E- wave 2: Proximal pa of 8th nerve. C- wave 3: Cochlear nucleus O- wave 4: Superior Olivery complex L- wave 5: Lateral leminiscus - Largest wave - Most stable - Produced at 5.5 ms after the stimulus I- wave 6 & 7: Inferior colliculus