Robustness of Multiplicative Processes in Auditory Spatial Tuning
Robustness of Multiplicative Processes in Auditory Spatial Tuning
复制标题
听觉空间调谐中乘法过程的鲁棒性
作者：
J. Peña;M. Konishi
猫头鹰下丘中的听觉空间特异性神经元选择性地响应声音传播的方向，这是由耳间时间（ITD）和水平（ILD）差异的组合定义的。数学分析表明，在这些神经元的突触后电位的幅度是一个产品的两个组成部分，ITD或ILD的变化。两耳间信号精细结构的时间相关性对于ITD的检测是必不可少的。通过改变双耳相关的程度，我们可以准确地改变空间特异性神经元突触后电位ITD成分的幅度。倍增的工作，为整个范围内的突触后电位所创造的操纵ITD。
Auditory space-specific neurons in the owl's inferior colliculus selectively respond to the direction of sound propagation, which is defined by combinations of interaural time (ITD) and level (ILD) differences. Mathematical analyses show that the amplitude of postsynaptic potentials in these neurons is a product of two components that vary with either ITD or ILD. Temporal correlation in the fine structure of signals between the ears is essential for detection of ITD. By varying the degree of binaural correlation, we could accurately change the amplitude of the ITD component of postsynaptic potentials in the space-specific neurons. Multiplication worked for the entire range of postsynaptic potentials created by manipulation of ITD.