通过关联的偏好:海马体内记忆机制如何影响决策
G Elliott Wimmer1, Daphna Shohamy
1Department of Psychology, Columbia University, New York, NY 10027, USA.
概括
海马有助于我们通过在记忆中传播奖励价值来快速做出决定. 这个大脑区域通过将过去的经验与潜在的奖励联系起来,引导新选择之间的选择.
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
- 决策科学 决策科学 决策科学
背景情况:
- 人类经常在没有直接经验的情况下,在新的替代品之间做出选择.
- 海马主要以其在形成长期宣言记忆中的作用而闻名.
- 对于新选择的快速,自信的决策背后的神经机制仍然不完全理解.
研究的目的:
- 调查海马在指导基于价值的决策中对新的选择选择的作用.
- 为了确定价值是否可以在记忆中传播,以影响选择.
- 阐明自动选择从记忆关联机制中出现的神经基础.
主要方法:
- 在人类参与者中使用功能性脑成像 (fMRI).
- 参与者获得了金钱奖励,并测量了随后的记忆激活和选择偏差.
- 进行了记忆和奖励相关的大脑区域之间的连接分析.
主要成果:
- 货币奖励激活了先前存在的记忆网络,向相关的非奖励项目传播了积极的价值.
- 参与者随后对选择这些未获得奖励的项目表现出偏见.
- 海马活动,记忆再激活和记忆奖励连接性预测了这种决策偏差.
结论:
- 海马促进基于价值的决策,使价值在相关的记忆中传播.
- 这种关联机制解释了新的替代品之间的选择是如何被记忆自动引导的.
- 展示了海马在基于价值的决策中的新功能.
相关概念视频
Role of Hippocampus in Memory
The hippocampus, a critical brain structure, plays an essential role in memory processing, particularly in the formation and retrieval of memory. This small, seahorse-shaped region is located within the medial temporal lobe, with one hippocampus in each brain hemisphere. Experimental studies involving lesions in the hippocampi of rats have demonstrated significant impairments in tasks such as object recognition and maze navigation, indicating the hippocampus involvement in both recognition and...
First Impression
First impressions play a crucial role in social perception, shaping how individuals assess others in professional, academic, and interpersonal contexts. Psychological research highlights the significance of cognitive biases, such as the primacy and recency effects, which influence how people interpret and recall information.The Primacy Effect and Cognitive AnchoringThe primacy effect describes the tendency for initial information to impact judgment disproportionately. When individuals encounter...
Implicit Memories
Implicit memories, also known as non-declarative memories, are long-term memories that function outside of conscious awareness. These memories influence behavior and skills without explicit knowledge. This type of memory is evident in tasks like playing tennis, snowboarding, and texting. Implicit memory has three subsystems: procedural memory, conditioning, and priming. This type of memory is essential in various activities, from everyday tasks to specialized skills.
One key aspect of implicit...
One key aspect of implicit...
Role of Amygdala in Memory
The amygdala is a small, almond-shaped structure responsible for processing and storing memories, particularly those linked to emotions like fear and stress. It plays an essential role in the brain's response to emotionally significant events and often enhances memory formation by triggering stress hormone release. The amygdala is vital for encoding and retrieving memories associated with fear or stress, a process that is adaptive by helping organisms avoid dangerous situations.
One of the...
One of the...
Storage
A schema is a mental framework that helps individuals organize and interpret information. Schemata, formed from previous experiences, influence how we process new information: how we encode it, the inferences we make, and how we retrieve it. For instance, a schema for what a typical classroom looks like might include desks, a teacher's desk, a whiteboard, and students in such an environment. This expectation helps us quickly understand and navigate new classrooms without needing to analyze each...
The Representativeness Heuristic
The representative heuristic describes a biased way of thinking, in which you unintentionally stereotype someone or something. For example, you may assume that your professors spend their free time reading books and engaging in intellectual conversation, because the idea of them spending their time playing volleyball or visiting an amusement park does not fit in with your stereotypes of professors.

