论文标题
一个听觉系统的玩具模型，可利用随机共振
A Toy Model for the Auditory System that exploits Stochastic Resonance
论文作者
论文摘要
听觉系统内耳内发生的转导过程是一种复杂的机制，需要非线性动力学描述。除此之外，还必须考虑到内耳自然出现的随机现象，在外部声音转导向电信号中。噪声的存在通常是不受欢迎的，但是在非线性系统中，适量的噪声可以改善系统的性能并增加信噪比。随机共振的现象将随机性与非线性结合在一起，并且是自然的候选者，可以解释在内耳中观察到的听力过程的至少一部分。在这项工作中，我们提出了一个听觉系统的玩具模型，该模型显示了随机共振如何对声音感知起来，并提出了对听力阈值的频率依赖性的解释。
The transduction process that occurs in the inner ear of the auditory system is a complex mechanism which requires a non-linear dynamical description. In addition to this, the stochastic phenomena that naturally arise in the inner ear during the transduction of an external sound into an electro-chemical signal must also be taken into account. The presence of noise is usually undesirable, but in non-linear systems a moderate amount of noise can improve the system's performance and increase the signal-to-noise ratio. The phenomenon of stochastic resonance combines randomness with non-linearity and is a natural candidate to explain at least part of the hearing process which is observed in the inner ear. In this work, we present a toy model of the auditory system which shows how stochastic resonance can be instrumental to sound perception, and suggests an explanation of the frequency dependence of the hearing threshold.
