Non-laminar cerebral cortex in teleost fishes?
Non-laminar cerebral cortex in teleost fishes?
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DOI：
10.1098/rsbl.2008.0397
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发表时间：
2009-02-23
期刊：
影响因子：
3.3
通讯作者：
Yamamoto, Naoyuki
中科院分区：
文献类型：
--
作者：
Ito, Hironobu;Yamamoto, Naoyuki
大头骨对于在三维空间中快速移动的动物不利，例如水中或空气中的鱼和鸟。具有六层片的大脑新皮质尚未进化，很可能是由于颅骨空间有限。端脑核团似乎不是层状皮层，而是进化为硬骨鱼中的大脑皮层。我们认为核团包含相当简单的神经回路，共享哺乳动物皮层中简单回路的骨架，这些骨架已由哺乳动物中的附加回路详细阐述。核和皮质大脑皮层在连接水平上的这种基本相似性可能是相似或等效功能的基础。
A large skull is disadvantageous to animals that move quickly in three-dimensional space, such as fishes and birds in water or air. A cerebral neocortex with a six-layered sheet has not evolved, most likely due to the limited cranial space. Instead of the laminar cortex, telencephalic nuclear masses seem to have evolved as the pallium in teleost fishes. We consider that the nuclear masses contain rather simple neural circuits sharing a skeleton of simple circuits in the mammalian cortex, which have been elaborated by additional circuits in mammals. Such basic similarities at the connectional level shared by nuclear and cortical pallium might underlie similar or equivalent functions.