大脑是如何进化的?

IF 16.7 1区 生物学 Q1 ECOLOGY
Trends in ecology & evolution Pub Date : 2025-06-01 Epub Date: 2025-04-17 DOI:10.1016/j.tree.2025.03.008
Cristián Gutiérrez-Ibáñez, Pavel Němec, Martin Paré, Douglas R Wylie, Louis Lefebvre
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引用次数: 0

摘要

在鸟类和哺乳动物中,大脑大小的变化主要反映了苍白球(新皮层)的质量或体积的变化,在较小程度上反映了小脑的质量或体积的变化,这表明大脑和认知的趋同共同进化。然而,当大脑的测量是基于神经元计数时,一个令人惊讶的不同的画面出现了:小脑中的神经元数量超过了所有哺乳动物(包括人类和其他灵长类动物)和许多但不是所有研究过的鸟类的苍白质。特别是鹦鹉和鸦科动物,它们的认知能力与灵长类动物相当,它们的大脑中含有更多的白质神经元,而不是小脑神经元。因此,鸟类和哺乳动物在增强认知复杂性的背后,可能遵循了不同的白脑-小脑协调进化路线。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
How do big brains evolve?

In both birds and mammals, variation in brain size predominantly reflects variation in mass or volume of the pallium (neocortex) and, to a lesser extent, of the cerebellum, suggesting convergent coevolution of brains and cognition. When brain measures are based on neuron counts, however, a surprisingly different picture emerges: The number of neurons in the cerebellum surpasses those in the pallium of all mammals (including humans and other primates) and in many but not all birds studied to date. In particular, parrots and corvids, clades known for cognitive abilities that match those of primates, have brains that contain more pallial than cerebellar neurons. Birds and mammals may thus have followed different evolutionary routes of pallial-cerebellar coordination behind enhanced cognitive complexity.

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来源期刊
Trends in ecology & evolution
Trends in ecology & evolution 生物-进化生物学
CiteScore
26.50
自引率
3.00%
发文量
178
审稿时长
6-12 weeks
期刊介绍: Trends in Ecology & Evolution (TREE) is a comprehensive journal featuring polished, concise, and readable reviews, opinions, and letters in all areas of ecology and evolutionary science. Catering to researchers, lecturers, teachers, field workers, and students, it serves as a valuable source of information. The journal keeps scientists informed about new developments and ideas across the spectrum of ecology and evolutionary biology, spanning from pure to applied and molecular to global perspectives. In the face of global environmental change, Trends in Ecology & Evolution plays a crucial role in covering all significant issues concerning organisms and their environments, making it a major forum for life scientists.
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