Manipulating the "straightness" and "curvature" of patterns of interaural cross correlation affects listeners' sensitivity to changes in interaural delay.
Manipulating the "straightness" and "curvature" of patterns of interaural cross correlation affects listeners' sensitivity to changes in interaural delay.
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操纵耳间互相关模式的“直线度”和“曲率”会影响听众对耳间延迟变化的敏感度。
DOI：
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发表时间：
2001
影响因子：
2.4
通讯作者：
M. Akeroyd
中科院分区：
文献类型：
--
作者：
C. Trahiotis;L. R. Bernstein;M. Akeroyd
本研究的目的是检验以下假设：与以互相关模式的“弯曲”轨迹为特征的刺激相比，以互相关模式的“直线”轨迹为特征的刺激对耳间时间差异（ITD）的变化更敏感。为此，使用一组“参考”刺激来测量对 ITD 变化的敏感性，作为持续时间的函数，这些刺激在其互相关模式内产生不同的相对直线度，同时将主导轨迹保持在中线或中线附近。通过采用以 500 Hz 为中心的高斯噪声的带宽、ITD 和耳间相位差 (IPD) 的特定组合来控制直线度的相对量。结果与预期一致，因为随着主“中线”轨迹上施加的曲率越来越大，阈值 ITD 的模式显示灵敏度越来越差。通过假设听众基于互相关函数最中心峰值位置的变化做出判断，或者基于二级互相关函数质心的变化做出判断，可以很好地定量解释刺激条件下阈值 ITD 的变化。在第二个实验中，使用参考刺激的子集作为掩蔽器来测量双耳检测。正如预期的那样，具有最大曲率特征的掩蔽器的灵敏度最差，这些掩蔽器也是具有最低的耳间相关性的掩蔽器。
The purpose of this study was to test the hypothesis that stimuli characterized by "straight" trajectories of their patterns of cross correlation foster greater sensitivity to changes in interaural temporal disparities (ITDs) than do stimuli characterized by more "curved" trajectories of their patterns of cross correlation. To do so, sensitivity to changes in ITD was measured, as a function of duration, using a set of "reference" stimuli that yielded differing relative amounts of straightness within their patterns of cross correlation while keeping the dominant trajectory at or near midline. The relative amounts of straightness were manipulated by employing specific combinations of bandwidth, ITD, and interaural phase disparity (IPD) of Gaussian noises centered at 500 Hz. The results were consistent with expectations in that the patterning of the threshold ITDs revealed increasingly poorer sensitivity as greater and greater curvature was imposed on the dominant, "midline," trajectory. The variations in threshold ITD across the stimulus conditions can be accounted for quite well quantitatively by assuming either that the listeners based their judgments on changes in the position of the most central peak of the cross-correlation function or that they based their judgments on changes in the centroid of a second-level cross-correlation function. In a second experiment, binaural detection was measured using a subset of the reference stimuli as maskers. As expected, sensitivity was poorest with the maskers characterized by the greatest curvature, which were also those having the lowest interaural correlation.
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影响因子：
2.4
作者：
GABRIEL, KJ;COLBURN, HS
通讯作者：
COLBURN, HS
噪声频带的偏侧化：带宽的影响以及耳间时间和相位的差异。
DOI：
10.1121/1.398743
发表时间：
1989
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Trahiotis,C;Stern,RM
通讯作者：
Stern,RM
复杂双耳刺激的侧化：加权图像模型。
DOI：
10.1121/1.396982
发表时间：
1988
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Stern,RM;Zeiberg,AS;Trahiotis,C
通讯作者：
Trahiotis,C
在单声道、双声道和双声道条件下区分噪声样本。
DOI：
10.1121/1.412393
发表时间：
1995
期刊：
The Journal of the Acoustical Society of America
影响因子：
--
作者：
Heller,LM;Trahiotis,C
通讯作者：
Trahiotis,C