Neural auditory selectivity develops in parallel with song
Neural auditory selectivity develops in parallel with song
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DOI：
10.1002/neu.20115
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发表时间：
2005-03-01
期刊：
影响因子：
--
通讯作者：
Konishi, M
中科院分区：
文献类型：
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作者：
Nick, TA;Konishi, M
斑胸草雀通过记忆导师的声音来学习歌曲，然后使用听觉反馈将他当前的声音与记忆或“模板”相匹配。成年和幼年鸟类的神经鸣叫系统对听觉刺激作出反应，并表现出对鸟类自己的鸣叫（BOS）的选择性调谐。我们直接研究了歌曲运动系统中神经调谐的发展。我们测量了不同年龄的人在睡眠中对发声的反应。我们现在报道，歌唱运动系统的听觉反应和运动输出在歌唱发育的早期就有联系。在睡眠期间，播放当前的BOS在歌曲练习期间引起了歌曲核HVC的反应，即使歌曲除了重复的乞求叫声之外什么都没有。在感觉运动期的中途，当歌曲还没有形成最终形式时，对BOS的反应已经超过了对所有其他听觉刺激的反应。此外，对以前塑料版本的BOS的响应会随着时间的推移而衰减。这表明对BOS的选择性调谐反映了鸟类当前发出的声音。(C) 2004 Wiley期刊有限公司
The zebra finch learns his song by memorizing a tutor's vocalization and then using auditory feedback to match his current vocalization to this memory, or "template". The neural song system of adult and young birds responds to auditory stimuli, and exhibits selective tuning to the bird's own song (BOS). We have directly examined the development of neural tuning in the song motor system. We measured song system responses to vocalizations produced at various ages during sleep. We now report that the auditory response of the song motor system and motor output are linked early in song development. During sleep, playback of the current BOS induced a response in the song nucleus HVC during the song practice period, even when the song consisted of little more than repeated begging calls. Halfway through the sensorimotor period when the song was not yet in its final form, the response to BOS already exceeded that to all other auditory stimuli tested. Moreover, responses to previous, plastic versions of BOS decayed over time. This indicates that selective tuning to BOS mirrors the vocalization that the bird is currently producing. (C) 2004 Wiley Periodicals, Inc.