A direct approach for the design of chirp stimuli used for the recording of auditory brainstem responses
A direct approach for the design of chirp stimuli used for the recording of auditory brainstem responses
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DOI：
10.1121/1.3489111
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发表时间：
2010-11-01
影响因子：
2.4
通讯作者：
Don, Manuel
中科院分区：
文献类型：
--
作者：
Elberling, Claus;Don, Manuel
最近的一项研究评估了由不同持续时间（扫描速率）的啁啾诱发的听觉脑干反应（ABR）[Elberling等人（2010）。J. Acoust.美国社会128，215-223]。该研究表明，较短的啁啾声在较高水平的刺激下最有效，而较长的啁啾声在较低水平下最有效。机制以外的行波延迟，特别是向上传播的兴奋和耳蜗神经延迟与水平的变化，建议负责这些发现。因此，基于行波延迟估计的延迟模型不足以用于啁啾激励的设计，因此提出了基于直接方法的另一种延迟模型。直接方法使用来自正常听力受试者的ABR-刺激来响应在宽范围水平上的倍频程带啁啾。倍频程啁啾是通过分解宽带啁啾而构造的，并且构成啁啾的子集。所提出的模型的延迟补偿是相似的，在以前的实验研究中发现，从而验证了所提出的模型的结果。(C)2010年美国声学学会。[DOI：10.1121/1.3489111]
A recent study evaluates auditory brainstem responses (ABRs) evoked by chirps of different durations (sweeping rates) [Elberling et al. (2010). J. Acoust. Soc. Am. 128, 215-223]. The study demonstrates that shorter chirps are most efficient at higher levels of stimulation whereas longer chirps are most efficient at lower levels. Mechanisms other than the traveling wave delay, in particular, upward spread of excitation and changes in cochlear-neural delay with level, are suggested to be responsible for these findings. As a consequence, delay models based on estimates of the traveling wave delay are insufficient for the design of chirp stimuli, and another delay model based on a direct approach is therefore proposed. The direct approach uses ABR-latencies from normal-hearing subjects in response to octave-band chirps over a wide range of levels. The octave-band chirps are constructed by decomposing a broad-band chirp, and constitute a subset of the chirp. The delay compensations of the proposed model are similar to those found in the previous experimental study, which thus verifies the results of the proposed model. (C) 2010 Acoustical Society of America. [DOI: 10.1121/1.3489111]