Visual and somatosensory inputs to the avian song system via nucleus uvaeformis (Uva) and a comparison with the projections of a similar thalamic nucleus in a nonsongbird, columbia livia
Visual and somatosensory inputs to the avian song system via nucleus uvaeformis (Uva) and a comparison with the projections of a similar thalamic nucleus in a nonsongbird, columbia livia
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通过UVaeformis核（Uva）对鸟类鸣叫系统进行视觉和体感输入，并与非鸣禽哥伦比亚利维亚（Columbia livia）中类似丘脑核的投射进行比较
DOI：
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发表时间：
1994
期刊：
影响因子：
--
通讯作者：
J. Wild
中科院分区：
文献类型：
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作者：
J. Wild
研究人员比较了鸣禽的uvaeformis核（Uva）和鸽子的后丘脑背外侧核（DLPc）在后丘脑背外侧的相对位置、细胞类型以及传入和传出投射。Uva核是鸣禽鸣叫控制回路的组成部分。两个核与束间束密切相关，具有相似的细胞类型，并接受来自视神经顶盖深层的密集投影，主要是同侧，以及来自背柱和外楔形核的明显投影，主要是对侧。利用视觉和体感刺激引起的多单位活动记录来引导向DLPc或Uva注射示踪剂，并绘制到端脑的投影图。两个核在同侧中新纹状体（NI）内侧有一个主要的终端场，在鸣禽中称为界面核（NIf），在尾侧新纹状体（NC）顶部有一个次要的终端场。在鸽子的NC中，DLPc的末端位于新纹状体背侧（Nd）区域内，而在雄性鸣禽中，Uva的末端位于高声带中心（HVC）。然后利用视觉和体感诱发活动的记录来引导向NI注射示踪剂，并再次比较鸽子和鸣禽的传入和传出投射。在鸽子的Nd、雌性鸣禽的NC背外侧、雄性鸣禽的HVC中均观察到终端场。在Nd或HVC中注射示踪剂，分别证实了它们在DLPc或Uva以及NI中的传入源，但NI中逆行标记细胞的分布与DLPc或Uva的终末场不完全重合。
Nucleus uvaeformis (Uva), previously identified as a component of song control circuitry in songbirds, and nucleus dorsolateralis posterior thalami, pars caudalis (DLPc) in pigeon, were compared with respect to their relative positions in the dorsolateral part of the posterior thalamus, their cell types, and their afferent and efferent projections. Both nuclei are closely related to the habenulointerpeduncular tract, have similar cell types, and receive a dense projection from deep layers of the optic tectum, predominantly ipsilaterally, and a distinct projection from the dorsal column and external cuneate nuclei, predominantly contralaterally. Recordings of multiple unit activity evoked by visual and somatosensory stimuli were used to guide injections of tracer into either DLPc or Uva, and the projections to the telencephalon were charted. Both nuclei were found to have a major terminal field in the medial part of the ipsilateral neostriatum intermedium (NI), known as nucleus interfacialis (NIf) in songbirds, and a minor terminal field in the roof of the neostriatum caudale (NC). In pigeon, the DLPc terminations in NC were within a region known as neostriatum dorsale (Nd), and, in male songbirds, the Uva terminations were in the high vocal center (HVC). Recordings of visual and somatosensory evoked activity were then used to guide injections of tracer into NI, and the afferent and efferent projections were again compared in pigeon and songbirds. The projections from either DLPc or Uva were confirmed, and terminal fields were observed either in Nd in pigeon, the dorsolateral part of NC in female songbirds, or HVC in male songbirds. Injections of tracer into either Nd or HVC confirmed their sources of afferents in DLPc or Uva, respectively, and in NI, but there was incomplete overlap of the distribution of retrogradely labelled cells in NI and the terminal fields of DLPc or Uva.
歌曲产生的时间模式：丘脑葡萄形核的参与。
DOI：
10.1002/neu.480240704
发表时间：
1993
期刊：
Journal of neurobiology
影响因子：
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作者：
Williams,H;Vicario,DS
通讯作者：
Vicario,DS