[The relation between cochlear distortion products and frequency tuning characteristics revealed by laser interferometery].

Objective: To explore the relation between distortion products and frequency tuning charateristics in cochlear basilar membrane. Method: Time variances curves of distortion products and frequency tuning curves of basilar membrane response were measured by laser interferometery in situ guinea pig cochlea. Result: Response sensitivity and tuning sharpness of basilar membrane response decreased with distortion product amplitude and become most low and flat when distortion products disappeared. Conclusion: Distortion products in cochlea are related with hearing sensitivity and frequency tuning. They are indicator whether function of cochlear hearing sensitivity enhancing and frequency tuning sharpening is still at work.
Competing Interests: The authors of this article and the planning committee members and staff have no relevant financial relationships with commercial interests to disclose.
(Copyright© by the Editorial Department of Journal of Clinical Otorhinolaryngology Head and Neck Surgery.)