Objective: Research on examination and significance of the auditory brain stem response (ABR) in non-hearing loss tinnitus patients.
Method: Recording from forehead-mastoid comparing ABR of non-hearing loss tinnitus patients with normal hearing youths.
Result: In the tinnitus patients, the prolongate latency percentage of wave I was 51.6%; the wave III was 20.9%; wave V was 17.9%.
Conclusion: Although hearing-loss was not founded in the patients, but the cochlea of some patients had been damaged.