Peripheral control and lateralization of birdsong
Peripheral control and lateralization of birdsong
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DOI：
10.1002/(sici)1097-4695(19971105)33:5
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发表时间：
1997-11-05
期刊：
影响因子：
--
通讯作者：
Suthers, RA
中科院分区：
文献类型：
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作者：
Suthers, RA
最近对几种鸣禽的研究表明，它们通过呼吸、空洞肌和其他声道肌肉的协调活动来实现不同的声音表演，这种方式最大限度地利用了两个独立控制的声源在其两个声带(发声器官)中的存在所可能的声学灵活性。在歌唱过程中，呼吸肌的特殊运动程序改变了呼吸模式，以维持呼吸空气和氧气的供应，从而允许长时间、高音节重复频率或最大频谱复杂性的歌曲。空洞的每一侧都接受自己的运动程序，该程序与发送到呼吸肌的运动程序一起决定同侧产生的声音的声学特性。这些两侧不同的语音运动模式的声学表达依赖于背侧脊髓空洞内收肌的动作，通过打开或关闭同侧脊髓空洞的气流，决定每一种运动模式的数量。侧方助力歌声。由注射器产生的声音被控制声道形状的肌肉进一步修改。不同的物种采取了不同的运动策略，以单侧、双侧、交替或顺序发音的方式使用空洞的左右两侧，以实现其歌曲不同的时间和频谱特征。因此，不同物种之间的偏侧化程度可能不同，形成了从单边优势到双边平等的连续体。(C)1997年John Wiley&Sons，Inc.
Recent studies on several species of oscine songbirds show that they achieve their varied vocal performances through coordinated activity of respiratory, syringeal, and other vocal tract muscles in ways that take maximum advantage of the acoustic flexibility made possible by the presence of two independently controlled sound sources in their bipartite syrinx (vocal organ). During song, special motor programs to respiratory muscles alter the pattern of ventilation to maintain the supply of respiratory air and oxygen to permit songs of long duration, high syllable repetition rates, or maximum spectral complexity. Each side of the syrinx receives its own motor program that, together with that sent to respiratory muscles, determines the acoustic properties of the ipsilaterally produced sound. The acoustic expression of these bilaterally distinct, phonetic motor patterns depends on the action of dorsal syringeal adductor muscles that, by opening or closing the ipsilateral side of the syrinx to airflow, determine the amount each. side contributes to song. The syringeally generated sound is further modified by muscles that control the shape of the vocal tract. Different species have adopted different motor strategies that use the left and right sides of the syrinx in patterns of unilateral, bilateral, alternating, or sequential phonation to achieve the differing temporal and spectral characteristics of their songs. As a result, the degree of sang lateralization probably varies between species to form a continuum from unilateral dominance to bilateral equality. (C) 1997 John Wiley & Sons, Inc.