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Neural and behavioral investigations into timbre perception

机译:对音色感知的神经和行为调查

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摘要

Timbre is the attribute that distinguishes sounds of equal pitch, loudness and duration. It contributes to our perception and discrimination of different vowels and consonants in speech, instruments in music and environmental sounds. Here we begin by reviewing human timbre perception and the spectral and temporal acoustic features that give rise to timbre in speech, musical and environmental sounds. We also consider the perception of timbre by animals, both in the case of human vowels and non-human vocalizations. We then explore the neural representation of timbre, first within the peripheral auditory system and later at the level of the auditory cortex. We examine the neural networks that are implicated in timbre perception and the computations that may be performed in auditory cortex to enable listeners to extract information about timbre. We consider whether single neurons in auditory cortex are capable of representing spectral timbre independently of changes in other perceptual attributes and the mechanisms that may shape neural sensitivity to timbre. Finally, we conclude by outlining some of the questions that remain about the role of neural mechanisms in behavior and consider some potentially fruitful avenues for future research.
机译:音色是区分相同音高,响度和持续时间的声音的属性。它有助于我们感知和区分语音,音乐乐器和环境声音中的不同元音和辅音。在这里,我们首先回顾人类的音色感知以及在语音,音乐和环境声音中引起音色的频谱和时间声学特征。我们还考虑了在人类元音和非人类发声情况下动物对音色的感知。然后,我们首先在外围听觉系统内,然后在听觉皮层一级探索音色的神经表示。我们检查了与音色感知有关的神经网络,以及可能在听觉皮层中执行的计算,以使听众能够提取有关音色的信息。我们考虑听觉皮层中的单个神经元是否能够独立于其他感知属性的变化以及可能影响神经对音色敏感性的机制来表示频谱音色。最后,我们通过概述一些关于神经机制在行为中的作用的问题来总结,并考虑一些将来研究的潜在成果。

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