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技能行动的功能组织在足够的和非典型的大脑中
Lukasz Przybylski1, Gregory Kroliczak2
1Action & Cognition Laboratory, Faculty of Psychology and Cognitive Science, Adam Mickiewicz University, Poznan, Poland.
Neuropsychologia
|November 20, 2023
概括
在工具掌握规划期间的神经活动显示左半球在右撇子中占主导地位. 非右手手表现出类似的左半球活动,但也增加了右半球的参与,挑战手的统治地位.
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
- 发动机控制器的控制器
背景情况:
- 右撇子 (右撇子) 通常在规划工具掌握时,在实践代表网络 (PRN) 中表现出左侧神经活动.
- 在运动规划过程中,非右撇子 (右撇子) 个体的脑部不对称性仍然不太了解.
- 以前的解释将运动技能的横向化与手的优势联系在一起.
研究的目的:
- 调查非右撇子个人在功能性掌握规划过程中是否表现出与右撇子类似的大脑不对称性.
- 探索手性和使用手对实践代表网络中神经活动的影响.
- 为了确定手的优势在多大程度上决定了运动认知功能的大脑组织.
主要方法:
- 与事件相关的功能磁共振成像 (fMRI) 用于研究62名参与者 (28名右手,34名非右手).
- 参与者计划了对工具和控制对象的功能性掌握,并执行了模执行.
- 两只手分别在两次会议中进行了测试,分析中考虑了非功能性抓握部件,并将信号变化引用到静止基线.
主要成果:
- 规划功能抓住左半球参与的PRN区域,无论是右撇子还是非右撇子,无论用什么手.
- 与右手相比,非右手患者的右半球活动显著增加 (期皮质,内,上边脊柱,中前脊柱) 与右手患者相比,当参照基线时.
- 当直接比较典型和非典型的半球表型时,功能掌握计划主要激活了典型表型中的左半球区域.
结论:
- 手的优势在组织大脑网络的运动认知功能 (如工具掌握计划) 中发挥着有限的作用.
- 非右撇子个体在运动规划过程中表现出明显的神经参与模式,特别是右半球激活的增加.
- 这些发现挑战了运动技能的横向化仅由占优势的手决定的概念.
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