Temporal patterning of song production: participation of nucleus uvaeformis of the thalamus.
Temporal patterning of song production: participation of nucleus uvaeformis of the thalamus.
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歌曲产生的时间模式：丘脑葡萄形核的参与。
DOI：
10.1002/neu.480240704
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发表时间：
1993
期刊：
影响因子：
--
通讯作者：
Vicario,DS
中科院分区：
文献类型：
--
作者：
Williams,H;Vicario,DS
鸟鸣是一种用于种内交流的习得性发声行为。服务于习得性发声的运动通路包括前脑核团NIf、HVC和RA; RA投射到控制歌曲的时间和声学特征的中脑和脑干区域。丘脑的Uvaeformis核（Uva）将输入发送到这些前脑核团中的两个（NIf和HVC），但并不被认为对歌曲的产生很重要。我们使用了三种实验方法来重新检查UVA的功能在成年雄性斑胸草雀。(1)电刺激Uva激活了HVC和发声运动通路，包括支配鸟类发声器官的气管鞘运动神经元。(2)双侧Uva病变，包括核的背内侧部分，影响了歌曲的正常颞叶组织。(3)在正常的歌曲和通话过程中，来自Uva的慢性多单元记录显示了运动前活动的爆发，这些活动导致了一些歌曲成分的发作，以及标志着完整歌曲主题结束的更大的爆发。这些结果表明，UVA在学习发声的生产，并进一步表明，UVA有助于更多的时间结构比歌曲的声学特性。John Wiley & Sons，Inc.
Birdsong is a learned vocal behavior used in intraspecific communication. The motor pathway serving learned vocalizations includes the forebrain nuclei NIf, HVC, and RA; RA projects to midbrain and brain stem areas that control the temporal and acoustic features of song. Nucleus Uvaeformis of the thalamus (Uva) sends input to two of these forebrain nuclei (NIf and HVC) but has not been thought to be important for song production. We used three experimental approaches to reexamine Uva's function in adult male zebra finches. (1) Electrical stimulation applied to Uva activated HVC and the vocal motor pathway, including tracheosyringeal motor neurons that innervate the bird's vocal organ. (2) Bilateral lesions of Uva including the dorso‐medial portion of the nucleus affected the normal temporal organization of song. (3) Chronic multiunit recordings from Uva during normal song and calls show bursts of premotor activity that lead the onset of some song components, and also larger bursts that mark the end of complete song motifs. These results implicate Uva in the production of learned vocalizations, and further suggest that Uva contributes more to the temporal structure than to the acoustic characteristics of song. © 1993 John Wiley & Sons, Inc.