在捕食鸟类中,一个类似于肠膜的区域
Marissa C Applegate1, Konstantin S Gutnichenko1, Emily L Mackevicius1
1Zuckerman Mind Brain Behavior Institute, Department of Neuroscience, Columbia University, 3227 Broadway, New York, NY 10027, USA.
Current biology : CB
|June 9, 2023
概括
研究人员在鸟类中发现了一种类似于脑内皮层的结构,揭示了类似于哺乳动物的神经活动和细胞类型. 这一发现表明了不同物种海马体功能背后的基本计算原理.
科学领域:
- 神经科学是一个神经科学.
- 比较解剖学的比较解剖学
- 认知生物学 认知生物学
背景情况:
- 哺乳动物内腔皮层对于海马的功能至关重要,通过专门的细胞类型处理各种输入.
- 非哺乳动物中缺乏明显的内腔皮层的功能性海马体的存在是一个进化难题.
研究的目的:
- 为了研究鸟类海马体的外部连接.
- 为了确定鸟类中潜在的脑内皮层同类物.
- 描述这些结构中的神经活动.
主要方法:
- 在鱼中对海马连接的解剖学追踪.
- 在特定的骨区域中,对神经活动的电生理记录.
- 分析细胞类型和发射模式,包括边缘和网状细胞.
主要成果:
- 鉴定出一种独特的鸟类结构,在拓上与哺乳动物内耳皮层相似.
- 这种结构是海马体与其他状区域之间的接口.
- 录音显示了类似体神经活动,包括边界和多场网格细胞,在一个类似于背中体皮质的区域.
结论:
- 鸟类的大脑在解剖学和生理学上相当于哺乳动物的内腔皮层.
- 这些发现表明,体类计算对脊椎动物进化中的海马体功能至关重要.
- 这突显了支持空间记忆和导航的神经电路的融合进化.
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