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首页> 外文期刊>Animal Cognition >Perception of warble song in budgerigars (Melopsittacus undulatus): evidence for special processing
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Perception of warble song in budgerigars (Melopsittacus undulatus): evidence for special processing

机译:虎皮鹦鹉(Melopsittacus undulatus)中蠕动的歌曲的感知:特殊处理的证据

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The long, rambling warble song of male budgerigars is composed of a large number of acoustically complex elements uttered in streams lasting minutes a time and accompanied by various courtship behaviors. Warble song has no obvious sequential structure or patterned repetition of elements, raising questions as to which aspects of it are perceptually salient, whether budgerigars can detect changes in natural warble streams, and to what extent these capabilities are species-specific. Using operant conditioning and a psychophysical paradigm, we examined the sensitivity of budgerigars, canaries, and zebra finches to changes in long (6 min) natural warble sequences of a male budgerigar. All three species could detect a single insertion of pure tones, zebra finch song syllables, budgerigar contact calls, or warble elements from another budgerigar’s warble. In each case, budgerigars were more sensitive to these changes than were canaries or finches. When warble elements from the ongoing warble stream were used as targets and inserted, out of order, into the natural warble stream so that the only cue available was the violation of the natural ordering of warble elements, only budgerigars performed above chance. When the experiment was repeated with all the ongoing warble stream elements presented in random order, the performance of budgerigars fell to chance. These results show species-specific advantages in budgerigars for detecting acoustic changes in natural warble sequences and indicate at least a limited sensitivity to sequential rules governing the structure of their species-specific warble songs.
机译:雄性虎皮鹦鹉的一首漫长而颤抖的颤抖的歌曲,由大量声音复杂的元素组成,这些元素在一次持续几分钟的溪流中发出,并伴有各种求爱行为。 Warble歌曲没有明显的顺序结构或元素的图案重复,这使人怀疑它的哪些方面在感知上很显着,虎皮鹦鹉是否可以检测天然warble流的变化以及这些功能在多大程度上是特定于物种的。使用操作员条件和心理物理范例,我们检查了虎皮鹦鹉,金丝雀和斑马雀对雄性虎皮鹦鹉长(> 6分钟)自然疣序列变化的敏感性。这三个物种都可以检测到单一音调,斑马雀科歌曲音节,虎皮鹦鹉联系电话或另一只虎皮鹦鹉的沃布尔元素的单一插入。在每种情况下,虎皮鹦鹉比金丝雀或雀科对这些变化更为敏感。当使用来自持续的弹流中的弹形元素作为目标并将它们乱序插入自然弹形流中时,唯一的提示是违反了弹形元素的自然排序,只有虎皮鹦鹉的表现高于偶然。当重复进行实验时,所有正在进行的warble流元素以随机顺序出现,虎皮鹦鹉的性能下降了。这些结果表明,在虎皮鹦鹉中,特定物种的优势可用于检测天然疣序列中的声学变化,并且表明对控制其特定物种的疣歌的结构的顺序规则的敏感性至少有限。

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