在行动规划期间跨半球招聘,随着任务需求的增加,任务需求的增加
Sonja Schach1, Daniel Alexander Braun2, Axel Lindner3,4
1Institute of Neural Information Processing, University of Ulm, Ulm, Germany. sonja.schach@uni-ulm.de.
Scientific reports
|September 16, 2023
概括
成年人的大脑使用跨半球招募,激活大脑的两侧,以在苛刻的认知任务中提高执行功能和记忆性能.
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
- 神经成像是一种神经成像.
背景情况:
- 侧向的大脑区域通常会显示出与更高的认知需求增加的激活.
- 跨半球招募,参与大脑相反半球的同类区域,已经观察到老年人和年轻人的极限.
- 目前尚不清楚这是否是不同执行任务和大脑区域的通用策略.
研究的目的:
- 调查跨半球招募是否是成年人的一般认知策略.
- 为了确定执行任务需求是否调节前额叶皮层以外的双边大脑激活.
- 检查不同认知任务的跨半球招聘,特别是工作记忆和行动计划.
主要方法:
- 来自两个不同的实验的功能磁共振成像 (fMRI) 数据的分析.
- 研究的任务包括追溯性工作记忆维护和前性行动计划.
- 在不同的认知负载和任务中检查了大脑激活和横向化的模式.
主要成果:
- 在任务和实验中确认了前额叶皮质的跨半球招募.
- 在行动计划期间观察到大脑侧向化变化,包括横半球招募,小脑,背前运动皮质和后壁皮质皮质.
- 发现皮质在空间工作记忆过程中表现出跨半球的招募,但不是口头工作记忆.
结论:
- 前额叶皮质在跨半球的招募中起到域一般的作用.
- 特定任务的大脑区域,如皮质,也会招募它们的反侧对应物来增强执行处理.
- 这表明一种灵活的,适应性的神经战略,用于管理各种执行功能的认知负载.
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