在维护口语和视觉空间工作记忆的过程中半球横向化
Jingya Huang1, Robin Gerrits2, Lisa Moreel1
1Department of Experimental Psychology, Ghent University, Ghent, Belgium.
Laterality
|December 1, 2025
概括
语言工作记忆 (VWM) 是左侧化的,而视觉空间工作记忆 (SWM) 显示双边大脑活动,根据这项使用功能性跨皮多普勒声学 (fTCD) 的研究. 观察到大脑横向性的个体差异.
科学领域:
- 认知神经科学 认知神经科学
- 神经成像是一种神经成像.
- 大脑的血液流动
背景情况:
- 工作记忆 (WM) 的半球横向化一直在争论中,早期的研究区分了口头WM (左半球) 和视觉空间WM (右半球).
- 后来的研究提出了关于WM侧面化的不一致的发现.
- 功能性横多普勒声谱 (fTCD) 提供了一种便携且具有成本效益的方法,通过测量大脑血流速度来评估大脑活动.
研究的目的:
- 研究材料类型对工作记忆 (WM) 中半球横向化的影响.
- 在口头工作记忆 (VWM) 和视觉空间工作记忆 (SWM) 任务中比较大脑活动模式.
- 探索WM任务期间大脑侧面化的个体差异.
主要方法:
- 使用功能性横多普勒声谱 (fTCD) 测量双侧中脑动脉中的血液流动速度.
- 招募了39名健康的右撇子志愿者 (17-28岁).
- 管理了两个项目识别WM任务:一个VWM任务与伪词和一个SWM任务与点位置.
主要成果:
- 在VWM任务中,左半球有显著的侧面化.
- 在SWM任务中,在小组层面上显示出双边的大脑活动模式.
- 在SWM任务中观察到横向性的显著个体变异.
结论:
- 口头工作记忆主要侧向左半球.
- 视觉空间工作记忆涉及双边大脑区域,在横向化方面存在很大个体差异.
- fTCD是研究WM横向化及其材料特异性影响的可行工具.
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