奖励背景的抽象化促进了澳门前皮层神经群体的相对奖励编码
Jonathan M Chien1,2, Joni D Wallis3, Erin L Rich4
1Nash Family Department of Neuroscience and Friedman Brain Institute, Icahn School of Medicine at Mount Sinai, New York, New York 10029.
概括
前带带皮层 (ACC) 使用人口编码来表示结果价值作为一个上下文. 这允许对实现的结果进行相对解释,这对于上下文依赖的评估和抽象推理至关重要.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 计算神经科学是一种神经科学.
背景情况:
- 前带带皮层 (ACC) 参与诸如目标定向行动和上下文信息处理等认知功能.
- 虽然ACC神经元编码预期的结果,但其所提出的功能背后的神经机制仍然不清楚.
- 现有的理论将ACC与电机控制或上下文跟踪联系起来,需要进一步研究其表示几何.
研究的目的:
- 调查 ACC 中的神经群体如何编码与任务相关的变量和潜在结果.
- 探索ACC神经活动的表示几何学,与结果价值和上下文相关.
- 确定ACC种群代码是否有助于对反进行上下文依赖的解释.
主要方法:
- 在两只雄性子中,从腹部和背部ACC分析神经增数据.
- 子执行了一个刺激-运动映射任务,涉及奖励和损失.
- 调查了任务期间神经活动的种群编码和表示几何学.
主要成果:
- ACC神经群体表现出低维的表示几何学,强调结果价值.
- 这种几何结构有助于对多个任务相关变量进行抽象和独立的表示.
- 结果价值被编码为一个上下文,实现的结果被解释为相对.
结论:
- ACC 种群编码提供了一个基于上下文的反解释机制.
- 在背景设置和结果相对解释方面,ACC发挥着关键作用.
- 在ACC中的抽象表示支持更高层次的认知,包括推理和概括.
相关概念视频
Timing and Consequences on Behavior
122
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...
122
Instinctive Drift
251
Instinctive drift refers to the tendency of animals to revert to their innate behaviors despite repeated reinforcement. Breland and Breland demonstrated this concept in an experiment with a raccoon. The raccoon was trained to pick up two coins and place them in a container in exchange for food. Initially, the raccoon learned to associate the coins with food, making them a conditioned stimulus or a substitute for food. However, over time, the raccoon became less willing to put the coins into the...
251
Incentive Theory: Pull Theory of Motivation
479
Incentive theory, or the "pull theory" of motivation, suggests that external rewards primarily drive behavior. Individuals are motivated to engage in activities when they anticipate a desirable outcome. This is why people often work hard for promotions or study intensively to achieve high grades. These incentives can be tangible, physical rewards such as money or promotions, or intangible, non-physical rewards like praise and social recognition.
The theory differentiates between...
The theory differentiates between...
479
Attribution Theory
13.0K
Behavior is a product of both the situation (e.g., cultural influences, social roles, and the presence of bystanders) and of the person (e.g., personality characteristics). Subfields of psychology tend to focus on one influence or behavior over others. Situationism is the view that our behavior and actions are determined by our immediate environment and surroundings. In contrast, dispositionism holds that our behavior is determined by internal factors (Heider, 1958).
13.0K
Primary and Secondary Reinforcers
299
In psychology, reinforcement is a key concept in behavior modification. B.F. Skinner demonstrated this with his experiments involving rats in what is known as a Skinner box. The rats learned to press a lever to receive food, a primary reinforcer that fulfilled their innate need for nourishment.
Effective reinforcers for humans vary depending on the individual and the context. Primary reinforcers, such as food, water, sleep, shelter, and pleasure, have inherent value and satisfy basic biological...
Effective reinforcers for humans vary depending on the individual and the context. Primary reinforcers, such as food, water, sleep, shelter, and pleasure, have inherent value and satisfy basic biological...
299


