目标概率对发动机准备和执行的影响
Juliana Yordanova1, Plamenka Nanova1, Lora Lyamova1
1Institute of Neurobiology, Bulgarian Academy of Sciences, Acad. G. Bonchev Str., bl. 23, 1113, Sofia, Bulgaria.
概括
运动目标概率影响运动准备 (NSP) 和执行 (RRP),显示半球专业化. 左半球增强运动,而右半球控制抑制,但对性能监测 (Nc) 的目标概率影响尚不清楚.
科学领域:
- 神经科学是一个神经科学.
- 认知心理学 认知心理学
- 发动机控制器的控制器
背景情况:
- 运动准备和执行对于目标导向的行动至关重要.
- 目标概率可以影响认知和运动过程.
- 了解运动控制和性能监测的神经基础是必不可少的.
研究的目的:
- 调查运动目标概率对运动准备 (负缓慢潜力 - NSP),运动执行 (响应相关潜力 - RRP) 和性能监测 (正确响应消极性 - Nc) 的神经相关的影响.
- 在不同的目标概率下,检查运动准备,执行和性能监测之间的关联.
主要方法:
- 脑电图 (EEG) 用于记录年轻成年人的大脑活动.
- 参与者执行了一个听觉的Go/NoGo任务,同时进行双边手动响应.
- 操纵了不同的目标概率 (15%,50%,85%),并分析了NSP,RRP和Nc.
主要成果:
- NSPs表现出横向效应,在低概率和高概率的左运动皮质表现出明显的活动,在高概率的右运动皮质表现出较少的活动.
- 双边RRP对于低概率目标更大,与左半球NSP正相关,但与右半球NSP负相关.
- 正确响应消极度 (Nc) 不显示对目标概率的显著依赖.
结论:
- 半球专业化调节了运动准备和执行之间的相互作用,左半球增强运动,右半球参与主动抑制.
- 运动目标的概率影响运动准备和执行在不同半球不同.
- 对于与Go/NoGo任务中的目标概率相关的性能监测效应,Nc组件可能不是一个敏感的测量.
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