Laboratory of Artificial Intelligence and Cognition, School of Tourism Sciences, Beijing International Studies University, Beijing 100024, China.
School of Sports, Tsinghua University, Beijing 100084 China
JASA Express Lett. 2021 Jun;1(6):064401. doi: 10.1121/10.0005110.
This study used prepulse inhibition (PPI) of the acoustic startle reflex as a physiological measure to determine the sensitivity to a break in interaural correlation (BIC) in binaural gap detection and compared this physiological measure with the traditional behavioral measure. Results show that BIC could be used as a prepulse to induce PPI at different interaural delays. Furthermore, the PPIs induced by BIC at an interaural delay of 4 ms, but not 0, 2, or 8 ms, were correlated with the BIC delay threshold. These findings suggest that the BIC-induced PPI paradigm may serve as an objective measure of binaural gap detection.
本研究使用声反射起始抑制（PPI）作为生理测量手段，来确定对双耳间隙检测中耳间相关性中断（BIC）的敏感性，并将这种生理测量手段与传统行为测量手段进行了比较。结果表明，BIC 可作为一种引发不同耳间延迟的 PPI 的预备脉冲。此外，在耳间延迟为 4 ms 时，BIC 引发的 PPI，但在耳间延迟为 0、2 或 8 ms 时则不然，与 BIC 延迟阈值相关。这些发现表明，BIC 引发的 PPI 范式可能成为双耳间隙检测的客观测量手段。
