二级电机集成作为传感电机决策的最终仲裁者
Tarryn Balsdon1, Stijn Verdonck2, Tim Loossens2
1School of Psychology and Neuroscience, University of Glasgow, Glasgow, United Kingdom.
PLoS biology
|July 17, 2023
概括
这项研究揭示了运动过程积极塑造感觉运动决策,而不仅仅是跟随它们. 发动机系统中的二次泄漏积累器比单一积累模型更好地解释决策.
科学领域:
- 认知神经科学 认知神经科学
- 计算神经科学是一种神经科学.
- 人类运动控制人体运动控制
背景情况:
- 感官运动决策模型传统上集中在一个单一的感官证据积累阶段,在运动规划之前.
- 现有的理论往往忽略了在决策过程本身中运动系统动态的潜在贡献.
研究的目的:
- 通过二次泄漏蓄积器,提出和测试一个新的框架,其中运动过程通过二次泄漏蓄积器积极参与决策形成.
- 调查运动泄漏在适应时间平滑和感觉和运动证据整合之间的滞后中的作用.
主要方法:
- 采用正式模型比较来对比拟的双蓄电池模型与单蓄电池变体.
- 包括选择和响应时间在内的行为数据从人类观察员收集,这些观察员在不同的速度-准确性权衡下执行分类决策任务.
- 记录了脑电图 (EEG) 数据,以确定拟议的整合过程的神经相关物.
主要成果:
- 与单个蓄电机模型相比,采用二次漏电机蓄电机的拟议模型提供了与行为数据的优越匹配.
- 在速度精度权衡下的行为调整更好地解释为电机蓄电机泄漏的变化,而不是决策边界调整.
- 从EEG数据中得出的神经活动模式与双累积器模型的预测保持一致,支持其神经生物学可信性.
结论:
- 感官运动决策涉及感官证据积累和二次泄漏电机积累过程之间的动态相互作用.
- 电机系统的泄漏对于调整时间整合和决策时间至关重要,挑战了传统的单个蓄电池观点.
- 这一框架为运动过程在塑造选择行为中的积极作用提供了基于神经生物学的解释.
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