Addition of song-related neurons in swamp sparrows coincides with memorization, not production, of learned songs.
Addition of song-related neurons in swamp sparrows coincides with memorization, not production, of learned songs.
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沼泽麻雀中与歌曲相关的神经元的增加与所学歌曲的记忆而不是产生相一致。
DOI：
10.1002/neu.480200705
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发表时间：
1989
期刊：
影响因子：
--
通讯作者：
Nordeen,EJ
中科院分区：
文献类型：
--
作者：
Nordeen,KW;Marler,P;Nordeen,EJ
在鸟类的鸣叫学习过程中，神经元被添加到一些鸣叫核中，而从其他核中消失。以前的研究无法区分这些神经变化是否与记忆歌曲模型（感觉习得）或声乐练习（感觉运动学习）有关。在这项研究中，我们测量了沼泽麻雀鸣叫核内神经元数量的变化，沼泽麻雀是一种鸣叫学习的两个阶段不重叠的物种。雄性沼泽麻雀在刚孵化时就被收集起来，并在大约22至62日龄期间进行胶带辅导。沼泽麻雀在这段时间里记住了大约60%的歌曲材料，但直到275天大的时候才开始练习这些学习过的材料。分别在23、41、61、71、274、340日龄时处死。在感觉习得过程中，腹侧高纹状体（HVc）尾核和x区神经元数量急剧增加，感觉运动学习的周期与这些区域神经元数量的进一步变化无关。在歌曲学习的任何一个阶段，我们都无法检测到新纹状体大细胞核或纹状体健壮核内神经元数量的任何显著变化。这些结果提出了一种可能性，即持续增加的HVc和X区神经元可能会促进，从而暂时限制歌曲习得。
During song learning in birds, neurons are added to some song nuclei and lost from others. Previous studies have been unable to distinguish whether these neural changes are uniquely associated with memorizing a song model (sensory acquisition) or vocal practice (sensorimotor learning). In this study we measured changes in neuron number within song nuclei of swamp sparrows, a species in which the two phases of song learning are nonoverlapping. Male swamp sparrows were collected as hatchlings and tape‐tutored from approximately 22 to 62 days of age. Swamp sparrows memorize about 60% of their song material during this period, but do not begin practicing this learned material until approximately 275 days of age. Birds were sacrificed at 23, 41, 61, 71, 274, or 340 days of age. During sensory acquisition, neuron number increased drastically in both the caudal nucleus of the ventral hyperstriatum (HVc) and Area X. The period of sensorimotor learning was not associated with any further changes in neuron number within these regions. We were unable to detect any significant changes in neuron number within the magnocellular nucleus of the neostriatum or the robust nucleus of the archistriatum during either stage of song learning. These results raise the possibility that ongoing addition of HVc and Area X neurons may encourage, and thereby temporally restrict, song acquisition.
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DOI：
10.1016/s0163-1047(86)90485-1
发表时间：
1986-11-01
期刊：
BEHAVIORAL AND NEURAL BIOLOGY
影响因子：
--
作者：
NOTTEBOHM, F;NOTTEBOHM, ME;CRANE, L
通讯作者：
CRANE, L
DOI：
10.1002/neu.480180605
发表时间：
1987-11-01
期刊：
JOURNAL OF NEUROBIOLOGY
影响因子：
--
作者：
MARLER, P;PETERS, S;WINGFIELD, J
通讯作者：
WINGFIELD, J
影响因子：
56.9
作者：
PATON, JA;NOTTEBOHM, F
通讯作者：
NOTTEBOHM, F
影响因子：
3.8
作者：
S. Okuhata;N. Saito
通讯作者：
N. Saito
DOI：
10.1073/pnas.85.22.8722
发表时间：
1988-11-01
影响因子：
11.1
作者：
ALVAREZBUYLLA, A;THEELEN, M;NOTTEBOHM, F
通讯作者：
NOTTEBOHM, F