Mori Shuji, Morimoto Takashi, Murata Yuto, Okamoto Yasuhide, Kanzaki Sho
Department of Informatics, Faculty of Information Science and Electrical Engineering, Kyushu University, Fukuoka, Japan.
Technical Development Center, RION Co., Ltd., Tokyo, Japan.
Front Neurosci. 2023 Jul 5;17:1148476. doi: 10.3389/fnins.2023.1148476. eCollection 2023.
Auditory temporal resolution plays a critical role in the everyday experience of listening to complex acoustic patterns. Amplitude modulation detection thresholds are widely used to measure auditory temporal resolution. In an attempt to develop a standardized clinical test of auditory temporal resolution, we used ZEST (Zippy Estimation by Sequential Testing, a Bayesian threshold estimation procedure, to measure amplitude modulation detection thresholds. ZEST utilizes prior knowledge about a listener's thresholds, as represented by a probability density function of the thresholds, and psychometric functions of the listener's responses. This paper reports a preliminary study in which ZEST parameters that could be used for measurements of amplitude modulation detection thresholds were sought. For this purpose, we created histograms of the detection thresholds for a wide range of modulation frequencies, measured the psychometric functions of amplitude modulation detection, and performed computer simulations of ZEST threshold estimation. The results suggested that, with appropriately-set parameters, ZEST allows for the accurate estimation of amplitude modulation detection thresholds within 20 trials.
听觉时间分辨率在聆听复杂声学模式的日常体验中起着关键作用。调幅检测阈值被广泛用于测量听觉时间分辨率。为了开发一种标准化的听觉时间分辨率临床测试方法，我们使用ZEST（通过顺序测试进行快速估计，一种贝叶斯阈值估计程序）来测量调幅检测阈值。ZEST利用关于聆听者阈值的先验知识，该知识由阈值的概率密度函数以及聆听者反应的心理测量函数表示。本文报告了一项初步研究，该研究旨在寻找可用于测量调幅检测阈值的ZEST参数。为此，我们创建了一系列调制频率的检测阈值直方图，测量了调幅检测的心理测量函数，并对ZEST阈值估计进行了计算机模拟。结果表明，通过适当设置参数，ZEST能够在20次试验内准确估计调幅检测阈值。
