Krishnan A, McDaniel S S
University of Tennessee, Knoxville, Tenn., USA.
Audiol Neurootol. 1998 Sep-Oct;3(5):291-9. doi: 10.1159/000013801.
The binaural interaction component (BIC) of the 500-Hz human frequency-following response (FFR) was evaluated as a function of interaural intensity difference (IID) using a lateralization paradigm. The robust FFR interaction component (FFR-BIC) was shown to decrease systematically with increasing IID with no discernible FFR-BIC for IID values larger than about 20 dB. These findings are similar to that observed for the high-frequency auditory brainstem response interaction component (ABR-BIC). Thus, like the ABR-BIC, the FFR-BIC may be correlated with binaural fusion and the perceived location of the fused image of the sound. These results taken together suggest that the binaural neurons in the brainstem are able to utilize IID cues presented in both low-frequency and high-frequency sounds.
使用一种定位范式，将500赫兹人类频率跟随反应（FFR）的双耳交互成分（BIC）评估为双耳强度差（IID）的函数。结果显示，稳健的FFR交互成分（FFR-BIC）随着IID的增加而系统性降低，对于大于约20分贝的IID值，没有可辨别的FFR-BIC。这些发现与高频听觉脑干反应交互成分（ABR-BIC）的观察结果相似。因此，与ABR-BIC一样，FFR-BIC可能与双耳融合以及声音融合图像的感知位置相关。综合这些结果表明，脑干中的双耳神经元能够利用低频和高频声音中呈现的IID线索。
