Ren Tianying, Zheng Jiefu, He Wenxuan, Nuttall Alfred L
Oregon Hearing Research Center, Department of Otolaryngology and Head & Neck Surgery, Oregon Health and Science University, 3181 SW Sam Jackson Park Road, Portland, OR 97239.
Department of Radiology Nuclear Medicine, University of Iowa Hospitals and Clinics, 200 Hawkins Drive, Iowa City, IA 52242.
J Otol. 2013 Jun;8(1):57-62. doi: 10.1016/s1672-2930(13)50008-0.
Although stimulus frequency otoacoustic emissions (SFOAEs) have been used as a non-invasive measure of cochlear mechanics, clinical and experimental application of SFOAEs has been limited by difficulties in accurately deriving quantitative information from sound pressure measured in the ear canal. In this study, a novel signal processing method for multicomponent analysis (MCA) was used to measure the amplitude and delay of the SFOAE. This report shows the delay-frequency distribution of the SFOAE measured from the human ear. A low level acoustical suppressor near the probe tone significantly suppressed the SFOAE, strongly indicating that the SFOAE was generated at characteristic frequency locations. Information derived from this method may reveal more details of cochlear mechanics in the human ear.
尽管刺激频率耳声发射（SFOAEs）已被用作耳蜗力学的一种非侵入性测量方法，但SFOAEs在临床和实验中的应用一直受到从耳道测量的声压中准确获取定量信息的困难所限制。在本研究中，一种用于多分量分析（MCA）的新型信号处理方法被用于测量SFOAE的幅度和延迟。本报告展示了从人耳测量的SFOAE的延迟-频率分布。靠近探测音的低水平声学抑制器显著抑制了SFOAE，有力地表明SFOAE是在特征频率位置产生的。从该方法获得的信息可能揭示人耳耳蜗力学的更多细节。
