Until recently, psychoacoustics has devoted more attention to the behaviour of the peripheral auditory system than to the details of cognitive processing.

直到最近，心理声学的研究重心开始从认知过程的细节转向了对周边的听觉系统行为的研究。

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In contrast to the visual system, the auditory system has longer subcortical pathways and more spiking synapses between the peripheral receptors and the cortex.

听觉系统和视觉系统的不同之处在于：听觉系统在外周感受器和听皮层间具有更长的皮层下通路和更多的突触联系。

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Describe two peripheral neural codes that could be used by the auditory system to represent the frequency of pure tones.

描述两项听觉系统表现纯音频率的周边神经编码模式。

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