实验性扩大相对的telencephalon大小提高了古皮的主要执行功能能力
Zegni Triki1, Stephanie Fong1, Mirjam Amcoff1
1Department of Zoology, Stockholm University, Svante Arrheniusväg 18 B, Stockholm 106 91, Sweden.
PNAS nexus
|June 22, 2023
概括
毛皮犬中较大的远大脑与增强的执行功能 (如认知灵活性和抑制控制) 相相关. 这表明大脑结构大小的进化推动了脊椎动物的认知能力的进步.
科学领域:
- 神经科学是一个神经科学.
- 进化生物学 进化生物学
- 动物行为 动物行为
背景情况:
- 执行功能对于目标导向行为至关重要,但它们的进化基础尚不清楚.
- 研究主要集中在人类和灵长类动物上,在了解物种间的变异方面存在差距.
- 执行职能能力进化变化的机制基础在很大程度上仍未被探索.
研究的目的:
- 调查执行职能能力进化变化的机制基础.
- 为了确定电脑大脑的大小是否会影响鱼类的执行功能能力.
- 探索远脑大脑作为远鱼执行大脑的作用.
主要方法:
- 使用的雄性 (Poecilia reticulata) 来自有不同相对长脑大小的人工选择线.
- 使用已建立的测试测试认知灵活性,抑制控制和工作记忆.
- 包括一个基本的条件测试,以控制与非执行功能相关的学习.
主要成果:
- 在所有执行职能任务中,拥有较大的telencephalons的Guppies显著优于拥有较小telencephalons的Guppies.
- 在基本条件测定中,两组之间没有发现显著差异.
- 这表明电脑大小和执行职能表现之间存在特定的联系.
结论:
- 电脑大脑被认为是远鱼的执行大脑.
- 选择性扩大大脑结构,如telencephalon是一个潜在的进化途径,增强认知能力.
- 研究结果表明,在脊椎动物的执行功能中,telencephalon的作用是保留的.
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