Response properties of the auditory telencephalon in songbirds change with recent experience and season.
Response properties of the auditory telencephalon in songbirds change with recent experience and season.
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鸣禽中听觉端脑的响应属性随着最近的经验和季节而变化。
DOI：
10.1371/journal.pone.0002854
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发表时间：
2008-08-06
期刊：
影响因子：
3.7
通讯作者：
Vicario, David S.
中科院分区：
文献类型：
--
作者：
Terleph, Thomas A.;Lu, Kai;Vicario, David S.
尾内侧巢皮层（NCM）是斑胸草雀和金丝雀的一个端脑听觉区，被同种发声选择性激活。我们最近表明，时间和频谱动态的听觉调谐在NCM不同的这些物种之间。为了确定这些差异是否反映了最近的经验，我们将每个物种和性别的不同群体暴露在不同的住房条件下。在测试之前，将成年鸟饲养在具有同种（NORM）、具有异种（斑胸草雀鸟舍中的金丝雀受试者，反之亦然：（CROSS））的鸟舍中，或隔离（ISO）9天。然后，我们记录了细胞外多单位的电生理反应，简单的纯音刺激（250-5000赫兹）在清醒的鸟类从每个组和分析的听觉调谐宽度使用的方法，从我们早期的研究。相对于NORM鸟，在CROSS鸟中调谐较窄，在ISO鸟中调谐较宽。这种趋势在金丝雀中更明显，尤其是雌性。记录日期也作为协变量纳入ANCOVA中，ANCOVA分析了更大的金丝雀数据集，包括繁殖季节以外检测的鸟类数据，并将饲养条件和性别作为自变量。这些测试表明，调谐宽度在年初较窄，之后较宽。这种效应在CROSS雄性中最为明显。这里所描述的短期神经可塑性的程度不同性别和物种，并可能反映在NCM的解剖和功能组织的差异有关的物种差异的歌曲特征，成人可塑性和/或社会因素。更一般地，NCM调谐是不稳定的，并且可以通过最近的经验来调制，以反映行为适应当前声学、社会或季节背景所需的听觉处理。
The caudomedial nidopallium (NCM) is a telencephalic auditory area that is selectively activated by conspecific vocalizations in zebra finches and canaries. We recently demonstrated that temporal and spectral dynamics of auditory tuning in NCM differ between these species. In order to determine whether these differences reflect recent experience, we exposed separate groups of each species and sex to different housing conditions. Adult birds were housed either in an aviary with conspecifics (NORM), with heterospecifics (canary subjects in a zebra finch aviary, and vice versa: (CROSS)), or in isolation (ISO) for 9 days prior to testing. We then recorded extracellular multi-unit electrophysiological responses to simple pure tone stimuli (250–5000 Hz) in awake birds from each group and analyzed auditory tuning width using methods from our earlier studies. Relative to NORM birds, tuning was narrower in CROSS birds, and wider in ISO birds. The trend was greater in canaries, especially females. The date of recording was also included as a covariate in ANCOVAs that analyzed a larger set of the canary data, including data from birds tested outside of the breeding season, and treated housing condition and sex as independent variables. These tests show that tuning width was narrower early in the year and broader later. This effect was most pronounced in CROSS males. The degree of the short-term neural plasticity described here differs across sexes and species, and may reflect differences in NCM's anatomical and functional organization related to species differences in song characteristics, adult plasticity and/or social factors. More generally, NCM tuning is labile and may be modulated by recent experience to reflect the auditory processing required for behavioral adaptation to the current acoustic, social or seasonal context.
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影响因子：
2.8
作者：
Chen, QC;Jen, PHS
通讯作者：
Jen, PHS
DOI：
10.1073/pnas.93.5.1950
发表时间：
1996-03-05
影响因子：
11.1
作者：
Chew, SJ;Vicario, DS;Nottebohm, F
通讯作者：
Nottebohm, F
影响因子：
3
作者：
Terleph, Thomas A.;Mello, Claudio V.;Vicario, David S.
通讯作者：
Vicario, David S.
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.20219
发表时间：
2006-02-15
期刊：
JOURNAL OF NEUROBIOLOGY
影响因子：
--
作者：
Terleph, TA;Mello, CV;Vicario, DS
通讯作者：
Vicario, DS