Cortical complexity in cetacean brains
Cortical complexity in cetacean brains
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DOI：
10.1002/ar.a.20258
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发表时间：
2005-11-01
期刊：
影响因子：
--
通讯作者：
Marino, L
中科院分区：
文献类型：
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作者：
Hof, PR;Chanis, R;Marino, L
与陆生哺乳动物相比，鲸类动物（海豚、鲸鱼和鼠海豚）有着漫长而截然不同的进化史。在5500万到6000万年的进化过程中，鲸类动物获得了一系列令人信服的特征，包括回声定位能力（齿鲸类）、复杂的听觉和交流能力，以及复杂的社会组织。此外，尽管在超过9000万年的时间里，鲸目动物与灵长类动物没有共同的祖先，但它们拥有一系列与许多灵长类动物（包括类人猿和人类）惊人地趋同的认知属性。相比之下，鲸目动物进化出了一种与灵长类动物不同的神经生物学特征的极不寻常的组合。因此，鲸类动物的大脑提供了一个关键的机会来解决复杂的行为是如何基于非常不同的神经解剖学和神经生物学进化产物的问题。鲸类动物的大脑和灵长类动物的大脑可以说是最有意义的设想，作为神经生物学和认知复杂性的替代进化途径。在这篇文章中，我们总结了几种鲸类动物的大脑大小和半球表面结构的数据，并概述了宽吻海豚大脑皮层的细胞结构复杂性。(c) 2005 Wiley-Liss, Inc。
Cetaceans (dolphins, whales, and porpoises) have a long, dramatically divergent evolutionary history compared with terrestrial mammals. Throughout their 55-60 million years of evolution, cetaceans acquired a compelling set of characteristics that include echolocation ability (in odontocetes), complex auditory and communicative capacities, and complex social organization. Moreover, although cetaceans have not shared a common ancestor with primates for over 90 million years, they possess a set of cognitive attributes that are strikingly convergent with those of many primates, including great apes and humans. In contrast, cetaceans have evolved a highly unusual combination of neurobiological features different from that of primates. As such, cetacean brains offer a critical opportunity to address questions about how complex behavior can be based on very different neuroanatomical and neurobiological evolutionary products. Cetacean brains and primate brains are arguably most meaningfully conceived as alternative evolutionary routes to neurobiological and cognitive complexity. In this article, we summarize data on brain size and hemisphere surface configuration in several cetacean species and present an overview of the cytoarchitectural complexity of the cerebral cortex of the bottlenose dolphin. (c) 2005 Wiley-Liss, Inc.