Pitch perception is adapted to species-specific cochlear filtering

Pitch perception is adapted to species-specific cochlear filtering
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音调感知适应物种特定的耳蜗过滤

DOI:
10.1101/420786
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发表时间:
2018
期刊:
--
影响因子:
--
通讯作者:
Walker K
Walker K
中科院分区:
--
文献类型:
--
作者:
Walker K

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音调感知对于识别语音、音乐和动物发声至关重要,但其神经生物学基础尚未确定,部分原因是不同物种的结果不同。我们使用行为测量和耳蜗模型相结合的方法来研究用于感知音调的线索是否存在物种特异性差异,以及这些差异是否可以通过听觉外围的差异来解释。雪貂在时间包络线索强大的情况下都能很好地完成音高辨别任务,但在只有分辨谐波的情况下则不然。相比之下,人类听众在类似任务中表现出相反的结果模式,与先前的研究一致。模拟两个物种的耳蜗反应表明,两种类型的音高线索的相对显著性可归因于耳蜗过滤器带宽的差异。因此,跨物种的音高感知差异可能反映了在给定物种特定的耳蜗调谐的情况下估计声音基本频率的限制。
Pitch perception is critical for recognizing speech, music and animal vocalizations, but its neurobiological basis remains unsettled, in part because of divergent results from different species. We used a combination of behavioural measurements and cochlear modelling to investigate whether species-specific differences exist in the cues used to perceive pitch and whether these can be accounted for by differences in the auditory periphery. Ferrets performed a pitch discrimination task well whenever temporal envelope cues were robust, but not when resolved harmonics only were available. By contrast, human listeners exhibited the opposite pattern of results on an analogous task, consistent with previous studies. Simulated cochlear responses in the two species suggest that the relative salience of the two types of pitch cues can be attributed to differences in cochlear filter bandwidths. Cross-species variation in pitch perception may therefore reflect the constraints of estimating a sound’s fundamental frequency given species-specific cochlear tuning.
非人类哺乳动物(龙猫)处理沥青。
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期刊: Journal of comparative psychology (Washington, D.C. : 1983)
影响因子: --
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