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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Shared developmental and evolutionary origins for neural basis of vocal-acoustic and pectoral-gestural signaling
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Shared developmental and evolutionary origins for neural basis of vocal-acoustic and pectoral-gestural signaling

机译：声音和胸部手势信号的神经基础的共同发展和进化起源

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摘要

Acoustic signaling behaviors are widespread among bony vertebrates, which include the majority of living fishes and tetrapods. Developmental studies in sound-producing fishes and tetrapods indicate that central pattern generating networks dedicated to vocalization originate from the same caudal hindbrain rhombomere (rh) 8-spinal compartment. Together, the evidence suggests that vocalization and its morphophysiological basis, including mechanisms of vocal-respiratory coupling that are widespread among tetrapods, are ancestral characters for bony vertebrates. Premotor-motor circuitry for pectoral appendages that function in locomotion and acoustic signaling develops in the same rh8-spinal compartment. Hence, vocal and pectoral phenotypes in fishes share both developmental origins and roles in acoustic communication. These findings lead to the proposal that the coupling of more highly derived vocal and pectoral mechanisms among tetrapods, including those adapted for nonvocal acoustic and gestural signaling, originated in fishes. Comparative studies further show that rh8 premotor populations have distinct neurophysiological properties coding for equally distinct behavioral attributes such as call duration. We conclude that neural network innovations in the spatiotemporal patterning of vocal and pectoral mechanisms of social communication, including forelimb gestural signaling, have their evolutionary origins in the caudal hindbrain of fishes.
机译：声学信号传导行为在包括大多数活鱼和四足动物的骨质脊椎动物中很普遍。对发声鱼类和四足动物的发育研究表明，专门用于发声的中央模式产生网络源自相同的尾后脑菱形（rh）8脊间隔。总之，证据表明发声及其形态生理基础（包括四足动物中广泛存在的发声-呼吸耦合机制）是骨脊椎动物的祖先特征。在同一个rh8-脊髓腔室中形成了在运动和听觉信号传导中起作用的用于胸膜附件的运动前运动电路。因此，鱼类的声音和胸表型在声音交流中既具有发展起源又具有共同的作用。这些发现导致提出了这样的建议，即四足动物之间更高的声音和胸腔机制的耦合，包括那些适应于非声音的声音和手势信号的机制，起源于鱼类。比较研究进一步表明，rh8运动前群体具有不同的神经生理特性，可编码同样不同的行为属性，例如通话时间。我们得出的结论是，神经网络创新在包括前肢手势信号在内的社交和语言交流的时空模式中，其进化起源于鱼类的尾后脑。

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