阶段性警觉会通过放大证据积累器之间的竞争来损害认知控制.
Jeshua Tromp1, Franz Wurm2, Federica Lucchi2
1Institute of Psychology, Leiden University, Leiden 2333 AK, The Netherlands jeshuatromp@live.nl.
概括
阶段性警觉可以通过引入暂时的,独立于证据的输入 (TEI) 来损害决策. 这加剧了认知过程之间的竞争,尽管反应更快,但阻碍了控制.
科学领域:
- 认知神经科学 认知神经科学
- 决策科学 决策科学
背景情况:
- 阶段性警觉通常可以提高认知表现.
- 然而,它可以通过增加分心和损害认知控制来对决策产生负面影响.
- 这些有害影响的潜在机制尚不清楚.
研究的目的:
- 提出和测试一种新的,生物学上有信息的描述,说明阶段性警觉如何影响认知过程.
- 调查暂时,无证据输入 (TEI) 在阶段性警觉下决策中的作用.
- 阐明警觉,认知控制和证据积累之间的相互作用.
主要方法:
- 利用了从人类参与者执行箭头侧翼任务的瞳孔测量和电生理学数据.
- 开发并使用了侧边任务的计算模型,其中包含了一个暂时的,独立于证据的输入 (TEI).
- 研究了TEI对证据积累器及其横向抑制动态的影响.
主要成果:
- 用TEI建模的阶段性警觉,复制了侧边任务中观察到的行为效应.
- 该模型准确地预测了受损的决策和认知控制,当TEI通过横向抑制放大竞争时.
- 学生和电生理学数据支持TEI影响决策过程的拟议机制.
结论:
- 阶段性警觉产生暂时的,独立于证据的输入 (TEI),影响决策.
- 这种TEI缩短了响应时间,但增加了证据积累器之间的竞争,损害了认知控制.
- 动态警觉变化,认知控制和证据积累过程之间存在密切的相互作用.
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
Cognitive Enhancers: Cholinesterase Inhibitors and NMDA Receptor Antagonists
563
Cognitive enhancers, also known as "smart drugs," are substances used to enhance memory, mental alertness, and concentration. These can be natural or synthetic and improve cognition in conditions like Alzheimer's disease (AD) and other neurodegenerative diseases. Some common examples include caffeine, amphetamines, methylphenidate, modafinil, arecoline, donepezil, vortioxetine, and piracetam. These enhancers work on the principle of synaptic plasticity and altered circuit function.
563
Optimal Arousal Theory
781
The optimal arousal theory suggests that performance is maximized when an individual experiences a moderate level of arousal. This theory is closely tied to the Yerkes-Dodson law, which illustrates an inverted U-shaped relationship between arousal and performance. The law, formulated by psychologists Robert Yerkes and John Dodson, implies an ideal arousal level for optimal performance, and deviations from this level can lead to declines in effectiveness.
Inverted U-Shaped Performance Curve
The...
Inverted U-Shaped Performance Curve
The...
781
Interference and Decay
423
Forgetting is a complex cognitive phenomenon influenced by several factors, among which interference and decay are particularly prominent. These processes explain why individuals often struggle to retrieve specific information from memory, leading to lapses in recall that can be observed in everyday situations.
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
Interference occurs when competing memories hinder the retrieval of particular information. It can be classified into two types: proactive and retroactive interference. Proactive...
423


