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首页> 外文期刊>The European Journal of Neuroscience >Processing of interaural phase differences in components of harmonic and mistuned complexes in the inferior colliculus of the Mongolian gerbil
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Processing of interaural phase differences in components of harmonic and mistuned complexes in the inferior colliculus of the Mongolian gerbil

机译：蒙古大栖壤次粒子谐波和迷雾复合物组分的腔室差异

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摘要

Abstract Harmonicity and spatial location provide eminent cues for the perceptual grouping of sounds. In general, harmonicity is a strong grouping cue. In contrast, spatial cues such as interaural phase or time difference provide for strong grouping of stimulus sequences but weak grouping for simultaneously presented sounds. By studying the neuronal basis underlying the interaction of these cues in processing simultaneous sounds using van Rossum spike train distance measures, we aim at explaining the interaction observed in psychophysical experiments. Responses to interaural phase differences imposed on single components of harmonic and mistuned complex tones as well as noise delay functions were recorded as multiunit responses from the inferior colliculus of Mongolian gerbils. Results revealed a better representation of interaural phase differences if imposed on a harmonic rather than a mistuned frequency component of a complex tone. The representation of interaural phase differences was better for long integrationtime windows approximately reflecting firing rates rather than short integrationtime windows reflecting the temporal pattern of the stimulusdriven response. We found only a weak impact of interaural phase differences if combined with mistuning of a component in a harmonic tone complex.
机译：摘要谐波和空间位置为声音的感知分组提供了杰出的提示。一般而言，谐波是一个强大的分组。相反，诸如腔室期或时间差的空间提示提供了强烈的刺激序列分组，但同时显示声音的弱分组。通过研究这些提示的相互作用的神经元基础，在使用范罗欧姆尖峰列车距离措施加工同时声音时，我们旨在解释在心理物理实验中观察到的相互作用。响应对谐波和迷雾复杂音调的单个组成部分的互相相差以及噪声延迟功能的响应被记录为来自蒙古·阿尔匹油的下小粒子的多单响应。结果表明，如果施加对谐波而不是复杂音调的迷雾频率分量，则揭示了互连差异的更好表示。对于长积分窗口而言，互联差异的表示越好，大致反映了射击率而不是反映了刺激响应的时间模式的短积分时间窗口。如果结合谐波音色复合物中的组件的迷雾，我们发现互纳能相差的影响弱。

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