社会复杂性影响认知能力,但不影响Poeciliid鱼类的大脑结构
Zegni Triki1,2, Tunhe Zhou3, Elli Argyriou2
1Behavioral Ecology Division, Institute of Ecology and Evolution, University of Bern, Baltzerstrasse 6, 3012 Bern, Switzerland.
概括
在较大的社会群体中生活可以增强熊猫 (Poecilia reticulata) 的认知灵活性. 这项研究实验性地表明,社会环境影响认知发展,独立于大脑大小的变化.
科学领域:
- 行为生态学 行为生态学
- 神经科学是一个神经科学.
- 进化生物学 进化生物学
背景情况:
- 复杂的社交性被假设为驱动认知进化.
- 以前的证据表明,社交和认知之间的联系在很大程度上是相关的.
研究的目的:
- 实验性地研究小组大小和组成对古皮 (Poecilia reticulata) 认知发育的影响.
- 评估社会环境对大脑形态学和认知表现的影响.
主要方法:
- 的雌性在小 (3个同类) 或大 (6个同类或3个同类 + 3个异种) 组中养了6个月.
- 测试的认知能力包括自我控制,操作条件和认知灵活性.
- 使用X射线成像测量了大脑大小和主要的大脑区域.
主要成果:
- 较大群体 (6个人) 与较小群体相比,表现出增强的认知灵活性.
- 在自我控制或操作者调节表现方面没有发现显著差异.
- 社会操纵并没有显著影响大脑形态,但较大的远大脑与更好的认知灵活性相关.
结论:
- 在更大的社会群体中生活可以提高熊猫的认知灵活性.
- 社会环境影响认知发展,可能是通过直接改变大脑区域大小以外的其他机制.
- 这项研究为社交在塑造认知能力中的作用提供了实验支持.
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