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相关概念视频

Reinforcement Schedules01:24

Reinforcement Schedules

130
Positive reinforcement is a powerful method for teaching new behaviors to both animals and humans. B.F. Skinner demonstrated this with his experiments using rats in a Skinner box. When a rat pressed a lever, it received a food pellet. This immediate reward encouraged the rat to repeat the behavior. This method, where a reward follows every instance of the behavior, is known as continuous reinforcement. It is highly effective for establishing new behaviors quickly.
Once a behavior is learned,...
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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. 
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...
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Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
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相关实验视频

Updated: Jun 4, 2025

A Conflict Model of Reward-seeking Behavior in Male Rats
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戒烟期间强化学习的纵向变化:使用概率奖励任务进行计算分析.

Chiara Montemitro1,2,3, Paolo Ossola4,5, Thomas J Ross6

  • 1Neuroimaging Research Branch, National Institute on Drug Abuse-Intramural Research Program, National Institutes of Health, Baltimore, MD, USA. chiara.montemitro@liu.se.

Scientific reports
|December 31, 2024
PubMed
概括

戒烟的尼古丁吸烟者在戒烟期间对惩罚的敏感度增加,而不是奖励. 这种认知转变可能通过调整决策过程来帮助长期戒烟.

关键词:
决策方式 决策方式尼古丁禁忌 尼古丁禁忌 尼古丁禁忌惩罚的敏感性 惩罚的敏感性强化学习是一种强化学习.戒烟的方法是戒烟.撤回 撤回 撤回 撤回 撤回

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科学领域:

  • 神经科学是一个神经科学.
  • 心理学 心理学 心理学
  • 公共卫生 公共卫生

背景情况:

  • 烟草吸烟仍然是一个全球性的健康问题,许多人未能保持戒烟.
  • 了解戒烟期间的认知变化对于有效的干预至关重要.

研究的目的:

  • 研究吸烟者在尼古丁戒断期间强化学习 (RL) 的演变.
  • 检查在急性和长期戒烟期间决策过程如何变化.

主要方法:

  • 纵向,主体内设计,有20名吸烟者禁烟30天.
  • 概率奖励任务 (PRT) 来评估RL和信号检测分析.
  • 评估使用五个RL模型在禁欲期间的三个会议中进行评估.

主要成果:

  • 与假设相反,在戒烟期间,惩罚敏感性显著增加.
  • 尼古丁戒断综合征 (NWS) 影响了RL,具有动态的渴望奖励/惩罚敏感性.
  • 30天后对负面结果的高度敏感性表明对戒断的认知适应.

结论:

  • 戒烟需要显著的认知重新校准,特别是增加惩罚的敏感性.
  • 这些发现表明,需要个性化治疗方法来戒烟.
  • 需要进一步的研究,以了解禁欲期间惩罚敏感性的机制.