Clinical Observations with Transient Evoked Otoacoustic Emissions with Adults
Clinical Observations with Transient Evoked Otoacoustic Emissions with Adults
复制标题
成人瞬态诱发耳声发射的临床观察
DOI：
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发表时间：
1992
期刊：
影响因子：
--
通讯作者：
M. Robinette
中科院分区：
文献类型：
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作者：
M. Robinette
使用的测量系统是由肯普等人开发的耳动力学IL 088分析仪硬件和软件，Bray和肯普等人。该仪器采用频率响应为600至5000 Hz的80 μs矩形脉冲刺激测量瞬态诱发耳声发射（TEOAE）。脉率为50/s。使用瞬态刺激的两个优点是所产生的耳声发射可以同时提供宽频率范围内的信息，并且测试时间最短。在初步调查后，选择了80 dB pe SPL的单刺激设置和IL 088的差分非线性测试范例用于所有患者测试。在该范例中，四个脉冲被亚平均为80 μs的刺激块，该刺激块由三个等幅的压缩脉冲和一个大三倍的稀疏脉冲组成。在每个刺激块之后，耳道中的总响应为零，除非存在非线性分量（EOAE）。肯普等人报告称，该程序可使刺激伪影减少40 dB，回波响应仅损失6 dB。在临床环境中，非线性刺激范例对于TEOAE的识别远远优于线性刺激上级。我们选择不搜索排放阈值。如前所述，在临床环境中搜索TEOAE阈值具有局限性。例如，保持测听阈值恒定，TEOAE阈值随着年龄的增加而增加，超过30岁，并且具有自发性耳声发射（SOAE）的耳朵具有可理解的较低TEOAE检测阈值。因此，在TEOAE的临床评价中，我们选择采用中等刺激水平
The measurement system used is the Otodynamic IL088 Analyzer hardware and software developed by Kemp et al., Bray and Kemp et al. This instrument measures transiently evoked otoacoustic emissions (TEOAEs) with an 80-μs rectangular pulse stimulus with a frequency response of 600 to 5000 Hz. Pulse rate was 50/s. Two advantages of using transient stimulation are that the resulting OAEs can provide information over a wide range of frequencies simultaneously and testing time is minimal. Following a pilot investigation, a single-stimulus setting of 80 dB pe SPL with the differential nonlinear test paradigm of the IL088 was chosen for all patient testing. In this paradigm four pulses are subaveraged as an 80-μs stimulus block consisting of three compressional pulses of equal amplitude and one rarefaction pulse three times larger. After each block of stimuli, the summed response in the ear canal is zero unless there is a nonlinear component (the EOAE). Kemp et al. report that this procedure yields a 40-dB reduction in stimulus artifacts with only a 6-dB loss in echo response. The nonlinear stimulus paradigm is far superior to linear stimulation for identification of TEOAEs in a clinical setting. We opted not to search for emission threshold. As previously reported, searching for TEOAE threshold in a clinical setting has limitations. For example, holding audiometric thresholds constant, TEOAE thresholds increase with increasing age above 30 years and ears having spontaneous otoacoustic emissions (SOAEs) have understandably lower TEOAE detection thresholds. Therefore, in our clinical evaluation of TEOAEs we chose to employ a moderate stimulus level
听力损失的耳朵中的耳声发射。
影响因子：
2.5
作者：
Probst,R;Lonsbury-Martin,BL;Martin,GK;Coats,AC
通讯作者：
Coats,AC