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相关概念视频

Cell Signaling Feedback Loops01:07

Cell Signaling Feedback Loops

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Positive and negative feedback loops are crucial for regulating biological signaling systems. These feedback loops are processes that connect output signals to their inputs.
Negative feedback loops
Most signaling systems have negative feedback loops that can perform different functions such as output limiter, and adaptation.
Output limiter
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Effects of feedback01:24

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Feedback in control systems plays a critical role in shaping various operational parameters, extending beyond simple error reduction to influence stability, bandwidth, gain, impedance, and sensitivity. Understanding these effects requires examining a basic feedback system characterized by defined input, output, error, and feedback signals.
Feedback significantly modifies the gain of a control system. The gain of a system without feedback is altered by a factor of one plus GH, where G represents...
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Hindsight Biases01:12

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Hindsight bias leads you to believe that the event you just experienced was predictable, even though it really wasn’t. In other words, you knew all along that things would turn out the way they did. Can you relate this to the phrase "Hindsight is 20/20" now? 
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Timing and Consequences on Behavior01:08

Timing and Consequences on Behavior

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In operant conditioning, the timing of reinforcement is crucial. For animals like rats and cats, immediate reinforcement (within a few seconds) is much more effective than delayed reinforcement. For example, a food reward for a rat needs to follow within 30 seconds of pressing a bar to be effective. 
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Facial Feedback Hypothesis01:24

Facial Feedback Hypothesis

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Charles Darwin proposed that facial expressions are an evolutionary adaptation for communication. He argued that these expressions are not influenced by culture but are universal across species. For example, a snarling expression with exposed teeth signals a threat in many animals, including humans. Darwin also suggested that displaying an emotion can intensify the feeling. Smiling, for example, could enhance one's sense of happiness. This idea laid the foundation for understanding the role...
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Richard Lazarus' cognitive mediational theory highlights the pivotal role of cognitive appraisal in shaping emotional responses. According to this theory, the evaluation of a stimulus — based on personal values, goals, beliefs, and expectations — mediates the emotional response. This appraisal process is immediate and often occurs unconsciously, influencing the intensity and nature of the resulting emotion.
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相关实验视频

Updated: Jun 27, 2025

The Adventures of Fundi Intervention Based on the Cognitive and Emotional Processing in Attention Deficit Hyperactive Disorder Patients
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立即和延迟的积极反的预测错误依赖的处理.

Constanze Weber1, Christian Bellebaum2

  • 1Faculty of Mathematics and Natural Sciences, Institute of Experimental Psychology, Department of Biological Psychology, Heinrich Heine University Düsseldorf, Universitätstraße 1, 40255, Düsseldorf, Germany. Constanze.Weber@hhu.de.

Scientific reports
|April 27, 2024
PubMed
概括

从反中学习依赖于预测错误 (PE). 这项研究表明,积极的PEs反映在脑活动 (RewP) 中,即时和延迟的反对学习至关重要.

关键词:
在FRN FRN FRN反延迟反的时间.预测错误是因为预测错误.强化学习是一种强化学习.在 RewP 里面,你会看到 RewP.

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The Joint Effect of Social Comparison and Social Distance on Evaluation of Intertemporal Choice Outcomes in Event-related Potential Studies
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Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments
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Measuring Attention and Visual Processing Speed by Model-based Analysis of Temporal-order Judgments

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相关实验视频

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科学领域:

  • 神经科学是一个神经科学.
  • 认知科学 认知科学
  • 心理学 心理学 心理学

背景情况:

  • 学习包括根据预测错误 (PE) 调整行为,当结果偏离预期时.
  • 奖励积极性 (RewP),事件相关潜力 (ERP),反映了与条形状处理相关的PEs,并使用电脑图 (EEG) 测量.
  • 推迟反处理被认为涉及海马,但其与PE和RewP的相互作用不太了解.

研究的目的:

  • 调查预测错误 (PE) 如何反映在即时和延迟反的奖励积极性 (RewP).
  • 探索延迟反的神经处理及其对与学习相关的大脑信号的影响.

主要方法:

  • 使用脑电图 (EEG) 来测量与事件相关的潜力 (ERP),特别是奖励积极性 (RewP).
  • 在任务执行后,向参与者提供了即时和延迟的反.
  • 分析ERP组件,包括RewP和P300,以回应积极和消极的反.

主要成果:

  • 与立即反相比,对于延迟反观察到RewP的总体减少.
  • 预测错误同样反映在RewP和后来的P300中,无论是立即的还是延迟的积极反.
  • 对于负面反,没有发现预测错误的显著影响,无论延迟.

结论:

  • 积极的预测错误驱动反处理和学习,无论反是立即的还是延迟的.
  • 尽管神经处理有差异,但与积极结果相关的学习信号在反延迟中保持一致.
  • 这些发现突显了学习机制中积极预测错误信号的稳定性.