Early onset of deafening-induced song deterioration and differential requirements of the pallial-basal ganglia vocal pathway.
Early onset of deafening-induced song deterioration and differential requirements of the pallial-basal ganglia vocal pathway.
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DOI：
10.1111/j.1460-9568.2008.06535.x
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发表时间：
2008-12
期刊：
影响因子：
--
通讯作者：
Jarvis ED
中科院分区：
文献类型：
--
作者：
Horita H;Wada K;Jarvis ED
与人类类似，鸣禽依靠听觉反馈来维持成人所学发声的声学和序列结构。当鸣禽耳聋时，习得的歌曲特征（例如音节结构和顺序）最终会恶化。然而，鸣叫退化的时间过程和初始阶段尚未得到充分研究，特别是在最常研究的鸣禽斑胸草雀中。在这里，我们观察到在震耳欲聋的几天内所学歌曲发生了以前未曾表征过的微妙但显着的变化。音节结构明显变得更加嘈杂，歌曲主题之间的无声间隔也增加了。尽管如之前报道的那样，歌曲主题序列在两周内保持稳定，但在较长的歌曲回合序列中发生了明显的变化。其中包括删除歌曲主题之间的音节、改变特定歌曲产生的频率以及鸟类在震耳欲聋之前重复一些音节的口吃。音节结构和歌曲循环顺序的变化以不同的速率发生，表明它们恶化的机制不同。音节结构的变化需要完整的外侧部分，但不需要大脑皮层基底神经节发声通路的内侧部分，而歌曲回合序列的变化不需要该通路的外侧或内侧部分。这些发现表明，震耳欲聋的斑胸草雀引起的鸣叫变化可以在震耳欲聋后迅速被检测到，声学和序列变化可以独立发生，并且在这段时间内，大脑皮层基底神经节发声通路控制声学结构变化，但不控制鸣叫序列变化。
Similar to humans, songbirds rely on auditory feedback to maintain the acoustic and sequence structure of adult learned vocalizations. When songbirds are deafened, the learned features of song, such as syllable structure and sequencing, eventually deteriorate. However, the time-course and initial phases of song deterioration have not been well studied, particularly in the most commonly studied songbird, the zebra finch. Here, we observed previously uncharacterized subtle but significant changes to learned song within a few days following deafening. Syllable structure became detectably noisier and silent intervals between song motifs increased. Although song motif sequences remained stable at 2 weeks, as previously reported, pronounced changes occurred in longer stretches of song bout sequences. These included deletions of syllables between song motifs, changes in the frequency at which specific chunks of song were produced and stuttering for birds that had some repetitions of syllables before deafening. Changes in syllable structure and song bout sequence occurred at different rates, indicating different mechanisms for their deterioration. The changes in syllable structure required an intact lateral part but not the medial part of the pallial-basal ganglia vocal pathway, whereas changes in the song bout sequence did not require lateral or medial portions of the pathway. These findings indicate that deafening-induced song changes in zebra finches can be detected rapidly after deafening, that acoustic and sequence changes can occur independently, and that, within this time period, the pallial-basal ganglia vocal pathway controls the acoustic structure changes but not the song bout sequence changes.
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影响因子：
64.8
作者：
Derégnaucourt, S;Mitra, PP;Tchernichovski, O
通讯作者：
Tchernichovski, O
影响因子：
64.8
作者：
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影响因子：
5.3
作者：
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通讯作者：
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影响因子：
2.5
作者：
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通讯作者：
Schmidt, MF
影响因子：
3.1
作者：
KONISHI, MASAKAZU
通讯作者：
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