Strelcyk Olaf, Dau Torsten
Centre for Applied Hearing Research, Department of Electrical Engineering, Technical University of Denmark, Ørsteds Plads, 2800 Kongens Lyngby, Denmark.
J Acoust Soc Am. 2009 Sep;126(3):1302-11. doi: 10.1121/1.3192220.
Behavioral and objective estimates of cochlear response times (CRTs) and traveling-wave (TW) velocity were compared for three normal-hearing listeners. Differences between frequency-specific CRTs were estimated via lateralization of pulsed tones that were interaurally mismatched in frequency, similar to a paradigm proposed by Zerlin [(1969). J. Acoust. Soc. Am. 46, 1011-1015]. In addition, derived-band auditory brainstem responses were obtained as a function of derived-band center frequency. The latencies extracted from these responses served as objective estimates of CRTs. Estimates of TW velocity were calculated from the obtained CRTs. The correspondence between behavioral and objective estimates of CRT and TW velocity was examined. For frequencies up to 1.5 kHz, the behavioral method yielded reproducible results, which were consistent with the objective estimates. For higher frequencies, CRT differences could not be estimated with the behavioral method due to limitations of the lateralization paradigm. The method might be useful for studying the spatiotemporal cochlear response pattern in human listeners.
对三名听力正常的受试者的耳蜗反应时间（CRT）和行波（TW）速度的行为学估计和客观估计进行了比较。通过对频率耳间不匹配的脉冲音进行侧向化来估计特定频率CRT之间的差异，这类似于Zerlin[(1969)。美国声学学会杂志。46, 1011 - 1015]提出的范式。此外，获得了作为衍生带中心频率函数的衍生带听觉脑干反应。从这些反应中提取的潜伏期作为CRT的客观估计。TW速度的估计值由获得的CRT计算得出。研究了CRT和TW速度的行为学估计与客观估计之间的对应关系。对于高达1.5kHz的频率，行为学方法产生了可重复的结果，这与客观估计一致。对于更高的频率，由于侧向化范式的局限性，无法用行为学方法估计CRT差异。该方法可能有助于研究人类受试者的时空耳蜗反应模式。
