层次的惊喜信号在自然主义中违反了预期
Vincent Plikat1,2,3, Pablo R Grassi1,2,3, Julius Frack4
1Department of Psychology, University of Tübingen, Tübingen, Germany.
Imaging neuroscience (Cambridge, Mass.)
|August 13, 2025
概括
使用魔术技巧调查惊喜反应揭示了大脑如何更新预期. 根据先前的知识,大脑区域根据不同的假设处理违反假设,影响感官处理.
科学领域:
- 认知神经科学 认知神经科学
- 神经成像是一种神经成像.
- 心理学 心理学 心理学
背景情况:
- 惊喜信号是认知警报,并通过更新内部世界表征来帮助学习.
- 关于惊喜的先前研究已经限制了对自然主义刺激的使用,以高层次的世界理解为目标.
- 了解惊喜对于认知神经科学至关重要.
研究的目的:
- 通过使用魔术技巧,调查神经对违反人类核心假设的反应.
- 检查先前知识如何影响大脑中的惊喜检测.
- 探索不同大脑区域惊喜信号的层次结构.
主要方法:
- 功能磁共振成像 (fMRI) 的实验.
- 参与者观看了魔法技巧的自然视频 (物体出现,改变颜色,消失) 和控制视频.
- 视频呈现,并没有事先了解这个技巧的解释.
主要成果:
- 在额头和身区域观察到通用的惊喜反应.
- 在后部感官区域发现了特定的惊喜反应,根据技巧类型而异.
- 默认模式网络 (DMN) 和感官区域显示通过先前知识进行调制.
结论:
- 存在一个惊喜信号的层次结构,前额和身区域处理通用期望违规行为.
- 感官区域表现出特定于处理的特征的惊喜信号,对先前的知识敏感.
- 这项研究增强了对大脑如何处理意想不到的事件和更新表示的理解.
相关概念视频
Naturalistic Observations
15.9K
If you want to understand how behavior occurs, one of the best ways to gain information is to simply observe the behavior in its natural context. However, people might change their behavior in unexpected ways if they know they are being observed. How do researchers obtain accurate information when people tend to hide their natural behavior? As an example, imagine that your professor asks everyone in your class to raise their hand if they always wash their hands after using the restroom. Chances...
15.9K
Schemas
12.0K
A schema is a mental construct consisting of a cluster or collection of related concepts (Bartlett, 1932). There are many different types of schemata, and they all have one thing in common: schemata are a method of organizing information that allows the brain to work more efficiently. When a schema is activated, the brain makes immediate assumptions about the person or object being observed.
12.0K
Confirmation Biases
7.2K
The confirmation bias is the tendency to focus on information that confirms our existing beliefs and ignore information that is inconsistent with our expectations. For example, if you think that your professor is not very nice, you notice all of the instances of rude behavior exhibited by the professor while ignoring the countless pleasant interactions he is involved in on a daily basis. Have you ever fallen prey to the confirmation bias, either as the source or target of such bias?
7.2K
Hindsight Biases
3.9K
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?
3.9K
Timing and Consequences on Behavior
152
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.
Humans, however, can respond to delayed reinforcers. We often make decisions between immediate small rewards and delayed larger rewards. This ability to delay gratification is a significant...
Humans, however, can respond to delayed reinforcers. We often make decisions between immediate small rewards and delayed larger rewards. This ability to delay gratification is a significant...
152
Bystander Effect
9.6K
The discussion of bullying highlights the problem of witnesses not intervening to help a victim. This is a common occurrence, as the following well-publicized event demonstrates. In 1964, in Queens, New York, a 19-year-old woman named Kitty Genovese was attacked by a person with a knife near the back entrance to her apartment building and again in the hallway inside her apartment building. When the attack occurred, she screamed for help numerous times and eventually died from her stab wounds.
9.6K


