不确定性,认知控制和泰达频段活动:依赖于元控制要求的关系
Seema Prasad1, Nasibeh Talebi1, Paul Wendiggensen1
1Cognitive Neurophysiology, Department of Child and Adolescent Psychiatry, Faculty of Medicine, TU Dresden, Dresden, Germany.
Human brain mapping
|September 23, 2025
概括
高度的不确定性并不总是会增加大脑中的泰达带活动. 相反,当面对不确定性时,α带活动可能会信号注意力过,影响认知控制.
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
- 计算神经科学是一种神经科学.
背景情况:
- 认知控制通常与 teta 带大脑活动有关.
- 由于高度的不确定性,在需要认知控制的情况下经常观察到theta活动的增加.
- 当不确定性引发好奇心时,theta活动的作用仍然不清楚.
研究的目的:
- 为了调查theta带活动是否与认知控制有关,当不确定性引起好奇心时.
- 在不同程度的不确定性下检查认知控制的神经相关物.
- 探索不确定性如何调节大脑连接和振荡动态.
主要方法:
- 在41名健康成年人中使用波斯纳暗示任务,操纵了与目标相关的不确定性.
- 应用时间频率和光束形成分析来研究振荡动态及其神经源.
- 进行了有效的连接分析,以评估信息传输模拟的不确定性.
主要成果:
- 在行为上,参与者在高不确定性下对与任务无关的线索表现出更高的敏感性.
- 在高不确定性与低不确定性相比,在后侧环状皮质中没有发现达带活动的显著增加.
- 有效的连接性分析显示,在高不确定性下,下叶与后叶皮层之间的连接较弱.
- 时 - 双肩交叉点的α波段活动表明不确定性对早期注意力过的影响.
结论:
- 高度的不确定性并不总是与theta带活动的增加有关.
- 不确定性可能涉及不同的 (元) 控制政策,可能涉及不同的振荡动态.
- 研究结果表明,不确定性,好奇心和认知控制机制之间存在微妙的关系.
相关概念视频
High-Level and Low-Level Awareness
629
Controlled processes in human consciousness represent high-alert mental states where individuals deliberately focus their attention on achieving specific goals. Controlled processes can be seen in situations like mastering new technology, where a person might become so absorbed that they ignore surrounding distractions. Such processes involve selective attention, requiring one to concentrate on particular elements of experience while disregarding others. These are governed by executive...
629
Self-Regulation
224
Self-regulation, also known as self-control, encompasses a range of cognitive and behavioral processes that allow individuals to adjust their internal states and outward actions to align with socially acceptable norms and long-term goals. It plays a fundamental role in adaptive functioning, from resisting impulsive behaviors to persisting through challenging tasks. While its benefits are widely recognized, self-regulation is not limitless. Muraven and Baumeister's theory posits that...
224
Metacognition
726
Metacognition is a conscious process where individuals are aware of their cognitive and executive processes, such as planning before solving a problem or self-monitoring during reading. For instance, a writer may need help with composing a piece. The situation involves a writer who is working on a piece of writing, but while doing so, they realize that something is missing. They notice that their characters lack depth or details. This realization occurs because the writer is reflecting on their...
726
Control Systems
1.8K
Control systems are everywhere in contemporary society, influencing diverse applications from aerospace to automated manufacturing. These systems can be found naturally within biological processes, such as blood sugar regulation and heart rate adjustment in response to stress, as well as in man-made systems like elevators and automated vehicles. A control system is essentially a network of subsystems and processes that collaboratively convert specific inputs into desired outputs.
At the heart...
At the heart...
1.8K
The Influence of Cognition on Affect
190
Cognition plays a pivotal role in shaping emotional experiences, as demonstrated by Schachter and Singer’s two-factor theory of emotion. According to this model, emotion arises from a combination of physiological arousal and cognitive interpretation. The body’s physiological response to stimuli is ambiguous and only gains emotional significance through cognitive labeling. For instance, an increased heart rate and adrenaline surge while standing near an attractive person may be...
190
Uncertainty: Overview
1.6K
In analytical chemistry, we often perform repetitive measurements to detect and minimize inaccuracies caused by both determinate and indeterminate errors. Despite the cares we take, the presence of random errors means that repeated measurements almost never have exactly the same magnitude. The collective difference between these measurements - observed values - and the estimated or expected value is called uncertainty. Uncertainty is conventionally written after the estimated or expected value.
1.6K


