在灵长类人前额叶皮层中,空间和形状信息的局部组织
bioRxiv : the preprint server for biology
|September 11, 2023
概括
前额叶皮层 (PFC) 中的神经元显示空间和对象信息的聚类. 这种组织部分是先天的,并通过认知训练进一步细化,在PFC微观结构中揭示有序的表示.
科学领域:
- 神经科学是一个神经科学.
- 认知神经科学 认知神经科学
- 灵长类大脑研究研究
背景情况:
- 感觉和运动皮层显示地形图,但更高的区域,如前额叶皮层 (PFC),缺乏明确的组织原则.
- 有限的证据表明,PFC中具有类似刺激特性的神经元的功能聚类.
- 了解PFC组织对于理解复杂的认知功能至关重要.
研究的目的:
- 调查代表类似空间和对象信息的神经元是否聚集在子前额皮层 (PFC).
- 为了确定这种组织是否会在认知训练的结果中出现或改变.
主要方法:
- 神经生理学记录是从雄性猿获得的.
- 在训练空间和形状工作记忆任务之前和之后分析记录.
- 统计分析评估了具有相似空间或形状选择性的神经元的近距离.
主要成果:
- 发现具有相似的空间或形状选择性的神经元比预期的更多地随机聚集在一起.
- 一些组织方面存在于天真的动物,表明先天性质.
- 在认知训练后,观察到组织的进一步变化,表明可塑性.
结论:
- 前额叶皮层 (PFC) 微观结构本质上支持空间和对象信息的有组织表示.
- 认知训练可以提炼和增强PFC内的神经组织.
- 这些发现挑战了在更高的皮层区域完全缺乏组织的概念.
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