The effect of auditory distractors on song discrimination in male canaries (Serinus canaria)
The effect of auditory distractors on song discrimination in male canaries (Serinus canaria)
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DOI：
10.1016/j.beproc.2005.01.010
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发表时间：
2005-06-30
影响因子：
1.3
通讯作者：
Ball, GF
中科院分区：
文献类型：
--
作者：
Appeltants, D;Gentner, TQ;Ball, GF
雄性鸣禽，如金丝雀，会发出复杂的习得性发声，用于吸引配偶和保卫领土。成功的配偶吸引或领土防御要求鸟类能够根据声音表现识别个体，并在嘈杂的背景中识别这些歌曲。为了更多地了解鸟类是如何能够解决这个问题，我们调查，与两个选择程序，成年雄性金丝雀的能力，区分同种歌曲片段从两个不同的鸟，并保持这种歧视时，同种歌曲叠加了各种干扰。结果表明，雄性金丝雀有能力区分，具有高水平的准确性的歌曲片段由两个不同的同种鸟类。当刺激被听觉干扰物掩蔽时，歌曲辨别部分保持，但辨别的准确性随着掩蔽干扰物的数量而逐渐下降。在实验中使用的干扰物的类型（其他同种歌曲或不同类型的人工白色噪音）并没有显着影响恶化的歌曲辨别率。这些数据表明，成年雄性金丝雀有感知能力，区分和选择性地参加一个正在进行的声音，同时发生的一个或多个其他声音。去甲肾上腺素能神经毒素的管理并没有显着损害的歧视学习能力，虽然测试的受试者人数太少，让任何坚定的结论。然而，在这些条件下，去甲肾上腺素能病变显着增加的数量失败的歧视学习任务中的反应表明的作用，在金丝雀，去甲肾上腺素能系统在一些注意力的过程中潜在的歌曲学习和处理。(c)2005 Elsevier B.V.保留所有权利。
Male songbirds such as canaries produce complex learned vocalizations that are used in the context of mate attraction and territory defense. Successful mate attraction or territorial defense requires that a bird be able to recognize individuals based on their vocal performance and identify these songs in a noisy background. In order to learn more about how birds are able to solve this problem, we investigated, with a two-alternative choice procedure, the ability of adult male canaries to discriminate between conspecific song segments from two different birds and to maintain this discrimination when conspecific songs are superimposed with a variety of distractors. The results indicate that male canaries have the ability to discriminate, with a high level of accuracy song segments produced by two different conspecific birds. Song discrimination was partially maintained when the stimuli were masked by auditory distractors, but the accuracy of the discrimination progressively declined as a function of the number of masking distractors. The type of distractor used in the experiments (other conspecific songs or different types of artificial white noise) did not markedly affect the rate of deterioration of the song discrimination. These data indicate that adult male canaries have the perceptual abilities to discriminate and selectively attend to one ongoing sound that occurs simultaneously with one or more other sounds. The administration of a noradrenergic neurotoxin did not impair markedly the discrimination learning abilities although the number of subjects tested was too small to allow any firm conclusion. In these conditions, however, the noradrenergic lesion significantly increased the number failures to respond in the discrimination learning task suggesting a role, in canaries, of the noradrenergic system in some attentional processes underlying song learning and processing. (c) 2005 Elsevier B.V. All rights reserved.