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首页> 外文期刊>Proceedings of the National Academy of Sciences of the United States of America >Auditory capacities in Middle Pleistocene humans from the Sierra de Atapuerca in Spain.
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Auditory capacities in Middle Pleistocene humans from the Sierra de Atapuerca in Spain.

机译:西班牙Sierra de Atapuerca的中更新世人类的听觉能力。

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摘要

Human hearing differs from that of chimpanzees and most other anthropoids in maintaining a relatively high sensitivity from 2 kHz up to 4 kHz, a region that contains relevant acoustic information in spoken language. Knowledge of the auditory capacities in human fossil ancestors could greatly enhance the understanding of when this human pattern emerged during the course of our evolutionary history. Here we use a comprehensive physical model to analyze the influence of skeletal structures on the acoustic filtering of the outer and middle ears in five fossil human specimens from the Middle Pleistocene site of the Sima de los Huesos in the Sierra de Atapuerca of Spain. Our results show that the skeletal anatomy in these hominids is compatible with a human-like pattern of sound power transmission through the outer and middle ear at frequencies up to 5 kHz, suggesting that they already had auditory capacities similar to those of living humans in this frequency range.
机译:人类的听觉与黑猩猩和大多数其他类人动物的听觉不同,在2 kHz至4 kHz范围内保持相对较高的灵敏度,该区域包含口语中的相关声学信息。了解人类化石祖先的听觉能力可以极大地增进人们对这种人类模式在我们进化史过程中何时出现的理解。在这里,我们使用一个综合的物理模型来分析骨架结构对西班牙西阿玛德洛斯韦索斯中更新世遗址的五个化石人类标本中外耳和中耳的声学过滤的影响。我们的研究结果表明,这些原始人的骨骼解剖结构与人类通过外耳和中耳以高达5 kHz的频率进行声功率传输的类人模式相兼容,这表明它们已经具有与活人相似的听觉能力。频率范围。

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