Connections of the auditory brainstem in a songbird, Taeniopygia guttata. I. Projections of nucleus angularis and nucleus laminaris to the auditory torus.
Connections of the auditory brainstem in a songbird, Taeniopygia guttata. I. Projections of nucleus angularis and nucleus laminaris to the auditory torus.
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DOI：
10.1002/cne.22334
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发表时间：
2010-06-01
期刊：
影响因子：
--
通讯作者：
Wild JM
中科院分区：
文献类型：
--
作者：
Krützfeldt NO;Logerot P;Kubke MF;Wild JM
一般来说，听觉信息对于鸟类的社会和繁殖行为很重要，但对于鸣鸟物种也至关重要，特别是因为在这些物种中，听觉反馈确保了鸣叫的学习和准确维持。虽然有大量关于通过鸣禽前脑进行听觉投射的信息，但没有可用于通过脑干进行投射的信息。在后一个层面，鸟类听觉处理的流行模型源自听觉专家仓鸮，它使用时间和强度参数来计算声音在空间中的位置，但鸣禽的听觉脑干是否具有类似的功能组织尚不清楚。为了检查鸣禽听觉脑干，我们使用标准束追踪技术绘制了斑胸草雀耳蜗角核 (NA) 和大细胞核 (NM) 以及三阶板层核 (NL) 的投影。与其他鸟类一样，NM 的投影被发现仅限于 NL，而 NL 和 NA 提供了上升的投影。在这里，我们报告了 NA 和 NL 到半圆环的差异投影，在鸟类中称为中脑外侧核、脊髓部 (MLd)，在哺乳动物中称为下丘中央核 (ICc)。与非鸣禽的情况不同，斑胸草雀的 NA 和 NL 到 MLd 的投影显示出大量重叠，这与哺乳动物耳蜗核到 ICc 的投影一致。该组织可能会建议听觉刺激的“内容”与“地点”同样重要。
Auditory information is important for social and reproductive behaviors in birds generally, but is crucial for oscine species (songbirds), in particular because in these species auditory feedback ensures the learning and accurate maintenance of song. While there is considerable information on the auditory projections through the forebrain of songbirds, there is no information available for projections through the brainstem. At the latter levels the prevalent model of auditory processing in birds derives from an auditory specialist, the barn owl, which uses time and intensity parameters to compute the location of sounds in space, but whether the auditory brainstem of songbirds is similarly functionally organized is unknown. To examine the songbird auditory brainstem we charted the projections of the cochlear nuclei angularis (NA) and magnocellularis (NM) and the third-order nucleus laminaris (NL) in zebra finches using standard tract-tracing techniques. As in other avian species, the projections of NM were found to be confined to NL, and NL and NA provided the ascending projections. Here we report on differential projections of NA and NL to the torus semicircularis, known in birds as nucleus mesencephalicus lateralis, pars dorsalis (MLd), and in mammals as the central nucleus of the inferior colliculus (ICc). Unlike the case in nonsongbirds, the projections of NA and NL to MLd in the zebra finch showed substantial overlap, in agreement with the projections of the cochlear nuclei to the ICc in mammals. This organization could suggest that the “what” of auditory stimuli is as important as “where.”
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影响因子：
2.5
作者：
BOORD, RL;RASMUSSEN, GL
通讯作者：
RASMUSSEN, GL
DOI：
10.1007/bf01350024
发表时间：
1985-01-01
影响因子：
2.1
作者：
CALFORD, MB;WISE, LZ;PETTIGREW, JD
通讯作者：
PETTIGREW, JD
DOI：
10.1007/bf00610398
发表时间：
1979-01-01
期刊：
JOURNAL OF COMPARATIVE PHYSIOLOGY
影响因子：
--
作者：
COLES, RB;AITKIN, LM
通讯作者：
AITKIN, LM
影响因子：
4
作者：
CELIO, MR;BAIER, W;GERDAY, C
通讯作者：
GERDAY, C
影响因子：
2.5
作者：
CARR, CE;FUJITA, I;KONISHI, M
通讯作者：
KONISHI, M