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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >A look at neural integration in the human auditory system through the stapedius muscle reflex.
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A look at neural integration in the human auditory system through the stapedius muscle reflex.

机译：通过the骨肌反射观察人类听觉系统中的神经整合。

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摘要

Ipsilateral and contralateral stapedius muscle contractions were studied as functions of the sound pressure level (SPL) and duration of 2-kHz tone bursts. The study complemented a preceding study in which temporal summation of stapedius muscle contractions produced by pairs of short tone bursts was determined and analyzed. The muscle contractions were determined indirectly by measuring changes in the acoustic impedance they produced at the tympanic membrane. The data for the stapedius muscle contraction as a function of tone-burst duration were derived from another study and analyzed in part with the help of the SPL functions obtained in the present study. According to the experimental results, the stapedius muscle contraction produced by contralateral stimulation follows a compressive power function paralleling both the cochlear output and loudness functions. The ipsilateral contraction follows an expansive power function. Mathematical analysis showed that the muscle tension due to contralateral stimulation increases with tone duration approximately according to the characteristic of a linear integrator having an exponentially decaying memory with a time constant that increases with SPL from approximately 200 to 370 msec. The simple relationship appears to be possible because of mutual cancellation of neural-processing characteristics preceding and following the temporal integration.
机译：研究了同侧和对侧骨肌的收缩与声压水平（SPL）和2 kHz音调持续时间的关系。该研究对先前的研究进行了补充，在先前的研究中，确定并分析了由成对的短声爆发产生的骨肌收缩的时间总和。肌肉收缩是通过测量鼓膜产生的声阻抗的变化来间接确定的。 another骨肌收缩作为声调持续时间的函数的数据来自另一项研究，并部分借助本研究中获得的SPL函数进行分析。根据实验结果，对侧刺激产生的骨肌收缩遵循与耳蜗输出和响度函数平行的压缩功率函数。同侧收缩遵循膨胀力函数。数学分析表明，由于对侧刺激而引起的肌肉张力随音调持续时间的增加而增加，这大致取决于具有指数衰减记忆的线性积分器的特性，其时间常数随SPL从200到370毫秒增加。这种简单的关系似乎是可能的，因为在时间积分之前和之后，神经处理特征相互抵消。

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