相关实验视频
Updated: May 28, 2025

08:30
Operant Procedures for Assessing Behavioral Flexibility in Rats
Published on: February 15, 2015
20.8K
风中介前额叶皮层病变会扰乱学习奖励他人
Margot Gueguen1, Jo Cutler1,2,3,4, Daniel Drew3,4,5
1Centre for Human Brain Health, School of Psychology, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK.
Brain : a journal of neurology
|February 11, 2025
概括
对腹中介前额叶皮层的损伤会损害亲社会强化学习,影响个人如何学习奖励他人. 特定的子区域,如子前带状皮质,对于这种学习过程至关重要.
科学领域:
- 神经科学是一个神经科学.
- 认知科学 认知科学
- 社会心理学 社会心理学
背景情况:
- 强化学习 (RL) 对于获得奖励至关重要,但亲社会行为需要学习如何让选择对他人有益.
- 腹中前额叶皮层 (vmPFC) 涉及RL和亲社会性,但其对亲社会性RL的因果作用尚不清楚.
- 对于vmPFC次区域对亲社会RL的具体贡献仍然基本未知.
研究的目的:
- 研究腹中前额叶皮层 (vmPFC) 损伤对亲社会强化学习的因果关系.
- 确定特定的vmPFC子区域在学习奖励自己与他人之间的作用.
- 阐明潜在的亲社会决策和奖励学习的神经机制.
主要方法:
- 一个强化学习任务,评估自我,他人和控制条件的学习 (没有人受益).
- 对焦性vmPFC损伤患者 (n=28) 与匹配的对照组 (其他地方的损伤,n=21;健康,n=124) 的行为比较.
- 应用一个计算模型,对积极和消极预测错误进行单独的学习速率,以及基于voxel的病变-症状映射.
主要成果:
- 与对照人群相比,vmPFC损害损害了准确性,并减少了来自亲社会RL的积极预测错误的学习率.
- 患有vmPFC损伤的患者在为他人而不是自我学习时,对负面预测错误的学习率更高.
- 前环状皮层和前环状皮层的损伤特别扰乱了亲社会强化学习,在vmPFC患者中观察到自益优势减少.
结论:
- 风中介前额叶皮层的完整性对于强化学习的多个方面至关重要,特别是亲社会变体.
- 阴茎下前带状皮层和前带状皮层旋转损伤严重损害了学习奖励他人的能力.
- 这些发现强调了亲社会学习和决策的神经基础.
相关概念视频
Role of Cerebellum and Prefrontal Cortex in Memory
342
The cerebellum, while traditionally associated with motor control, also plays a crucial role in memory, particularly in procedural memory, which involves learning motor tasks that become automatic through repetition. For example, studies have shown that when the cerebellum is damaged, individuals or animals lose the ability to learn conditioned motor responses, such as the conditioned eye-blink response in classical conditioning experiments with rabbits. This study demonstrates the...
342
Timing and Consequences on Behavior
77
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...
77
Association Areas of the Cortex
4.9K
Association areas are regions of the cerebral cortex that do not have a specific sensory or motor function. Instead, they integrate and interpret information from various sources to enable higher cognitive processes such as memory, learning, and decision-making. Some key association areas include the following:
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
Prefrontal Association Area: This area is located in the frontal lobe and is involved in planning, decision-making, and moderating social behavior. It connects with primary motor areas,...
4.9K
Operant Conditioning
1.5K
Operant conditioning, a key concept in behavioral psychology, involves using reinforcement and punishment to alter the likelihood of a behavior being repeated. B.F. introduced this type of conditioning. Skinner focused on voluntary behaviors and the consequences that follow them, influencing whether these behaviors will be strengthened or diminished.
Reinforcement in operant conditioning can be positive or negative, both of which serve to increase the likelihood of a behavior. Positive...
Reinforcement in operant conditioning can be positive or negative, both of which serve to increase the likelihood of a behavior. Positive...
1.5K
Operant Conditioning Intervention
34
Operant conditioning serves as a foundational principle in therapeutic interventions aimed at modifying maladaptive behaviors. Central to this approach is the notion that behaviors, both adaptive and maladaptive, are learned through reinforcement. By analyzing the environmental factors that reinforce problematic behaviors, clinicians can design interventions to weaken these reinforcements and replace maladaptive behaviors with healthier alternatives.
In operant conditioning, behaviors that are...
In operant conditioning, behaviors that are...
34

