Stimulus-dependent flexibility in non-human auditory pitch processing.
Stimulus-dependent flexibility in non-human auditory pitch processing.
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DOI：
10.1016/j.cognition.2011.08.008
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发表时间：
2012-01
期刊：
影响因子：
3.4
通讯作者：
Gentner TQ
中科院分区：
文献类型：
--
作者：
Bregman MR;Patel AD;Gentner TQ
鸣禽和人类在发声学习和听觉序列处理方面有许多相似之处。然而，这两组人在识别绝对音高(音高)变化的声音序列的能力上存在显著差异。虽然人类在音高变化较大的情况下仍能准确识别单词或旋律，但鸣禽在识别音调变化的音调序列方面相对较差。这种明显的差异可能反映了鸣禽表达声音的神经机制的根本差异。或者，由于非人类研究几乎完全使用正弦音调刺激，在自然信号背景下对音调高度变化的容忍度可能被低估。在这里，我们展示了欧洲八哥，一种鸣禽，可以保持对其他八哥歌曲的准确识别，当这些歌曲的音调变化高达±40%时。我们观察到，即使是在训练期间使用的频率范围之外的音调变化的歌曲也能准确识别，即使同种歌曲中的音调变化很容易被检测到。在使用人类钢琴旋律进行类似训练的情况下，对音调变化的旋律的识别非常有限。这些结果表明，非人类的基音处理比之前认为的更灵活，并且基音处理策略的灵活性依赖于刺激。
Songbirds and humans share many parallels in vocal learning and auditory sequence processing. However, the two groups differ notably in their abilities to recognize acoustic sequences shifted in absolute pitch (pitch height). Whereas humans maintain accurate recognition of words or melodies over large pitch height changes, songbirds are comparatively much poorer at recognizing pitch-shifted tone sequences. This apparent disparity may reflect fundamental differences in the neural mechanisms underlying the representation of sound in songbirds. Alternatively, because non-human studies have used sine-tone stimuli almost exclusively, tolerance to pitch height changes in the context of natural signals may be underestimated. Here, we show that European starlings, a species of songbird, can maintain accurate recognition of the songs of other starlings when the pitch of those songs is shifted by as much as ±40%. We observed accurate recognition even for songs pitch-shifted well outside the range of frequencies used during training, and even though much smaller pitch shifts in conspecific songs are easily detected. With similar training using human piano melodies, recognition of the pitch-shifted melodies is very limited. These results demonstrate that non-human pitch processing is more flexible than previously thought and that the flexibility in pitch processing strategy is stimulus dependent.
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影响因子：
3.4
作者：
Plantinga, J;Trainor, LJ
通讯作者：
Trainor, LJ
影响因子：
1.3
作者：
NELSON, DA
通讯作者：
NELSON, DA
DOI：
10.3758/bf03205458
发表时间：
1995-10-01
期刊：
PERCEPTION & PSYCHOPHYSICS
影响因子：
--
作者：
NYGAARD, LC;SOMMERS, MS;PISONI, DB
通讯作者：
PISONI, DB
影响因子：
4.1
作者：
HULSE, SH;CYNX, J;HUMPAL, J
通讯作者：
HUMPAL, J
影响因子：
--
作者：
DOLSON, M
通讯作者：
DOLSON, M