Spectral timbre perception in ferrets: discrimination of artificial vowels under different listening conditions.
Spectral timbre perception in ferrets: discrimination of artificial vowels under different listening conditions.
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DOI：
10.1121/1.4768798
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发表时间：
2013-01
期刊：
影响因子：
--
通讯作者：
Schnupp JW
中科院分区：
文献类型：
--
作者：
Bizley JK;Walker KM;King AJ;Schnupp JW
频谱音色是一种声学特征，它使人类听者能够确定所讲元音的身份。尽管它对声音感知的重要性，但对声音音色的神经表征知之甚少，并且很少有心理物理学研究调查了非人类物种的音色歧视。在这项研究中，雪貂积极条件反射辨别人工元音的声音在两个选择强迫选择范式。动物很快学会了区分元音/u/和/ε/，并立即能够概括一系列音高。他们在一系列实验中接受了进一步的测试，这些实验旨在评估他们在不同听力条件下区分这些元音的能力。首先，通过系统地移动第一和第二共振峰频率的位置来创建一系列变形元音。第二，雪貂被测试与单一共振峰刺激旨在评估光谱线索，他们可以使用，使他们的决定。最后，元音的歧视阈值来自噪声掩蔽存在下，无论是从相同或不同的空间位置。这些数据表明，雪貂在一系列听力条件下表现出强大的元音辨别行为，这种能力与人类听众有许多相似之处。
Spectral timbre is an acoustic feature that enables human listeners to determine the identity of a spoken vowel. Despite its importance to sound perception, little is known about the neural representation of sound timbre and few psychophysical studies have investigated timbre discrimination in non-human species. In this study, ferrets were positively conditioned to discriminate artificial vowel sounds in a two-alternative-forced-choice paradigm. Animals quickly learned to discriminate the vowel sound /u/ from /ε/, and were immediately able to generalize across a range of voice pitches. They were further tested in a series of experiments designed to assess how well they could discriminate these vowel sounds under different listening conditions. First, a series of morphed vowels was created by systematically shifting the location of the first and second formant frequencies. Second, the ferrets were tested with single formant stimuli designed to assess which spectral cues they could be using to make their decisions. Finally, vowel discrimination thresholds were derived in the presence of noise maskers presented from either the same or a different spatial location. These data indicate that ferrets show robust vowel discrimination behavior across a range of listening conditions and that this ability shares many similarities with human listeners.
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影响因子：
9.8
作者：
Kacelnik O;Nodal FR;Parsons CH;King AJ
通讯作者：
King AJ
DOI：
10.1523/jneurosci.5475-09.2010
发表时间：
2010-04-07
期刊：
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子：
--
作者：
Bizley JK;Walker KM;King AJ;Schnupp JW
通讯作者：
Schnupp JW
影响因子：
2.4
作者：
Carlile, S;Wardman, D
通讯作者：
Wardman, D
影响因子：
1.9
作者：
Dent, ML;Larsen, ON;Dooling, RJ
通讯作者：
Dooling, RJ
影响因子：
1.3
作者：
Eriksson, Jan L.;Villa, Alessandro E. P.
通讯作者：
Villa, Alessandro E. P.