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相关概念视频

Avoidance Learning and Learned Helplessness01:14

Avoidance Learning and Learned Helplessness

1.7K
Avoidance learning and learned helplessness are critical concepts in understanding behavioral responses to negative stimuli.
Avoidance learning occurs when an organism learns that a specific behavior can prevent an unpleasant outcome. For example, a student who receives a bad grade may start studying harder to avoid future poor grades. This behavior persists even when the negative outcome is no longer present. Avoidance learning is powerful because it maintains behavior in the absence of the...
1.7K
Desensitization and Tachyphylaxis01:20

Desensitization and Tachyphylaxis

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Tachyphylaxis is described as a rapid decrease in response to a drug after repeated or continuous administration of the same drug dose. It is a phenomenon where the body becomes less responsive to a particular substance or intervention over time, requiring higher doses or stronger interventions to achieve the same effect. It results from adaptive changes in the body's receptors, signaling pathways, or physiological processes that occur in response to prolonged exposure to a stimulus.
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Behavior Therapy01:22

Behavior Therapy

43
Behavior therapy incorporates diverse techniques rooted in classical conditioning principles to address maladaptive behaviors and anxiety disorders. These methods aim to reduce avoidance behaviors, foster adaptive coping mechanisms, and alter associations between stimuli and responses, making them effective in a wide range of therapeutic contexts.
Exposure therapy is a cornerstone of behavioral treatment for anxiety disorders. It involves systematic exposure to feared stimuli, either in real...
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Instinctive Drift01:05

Instinctive Drift

193
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...
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相关实验视频

Updated: Jun 13, 2025

Investigating Pain-Related Avoidance Behavior using a Robotic Arm-Reaching Paradigm
09:00

Investigating Pain-Related Avoidance Behavior using a Robotic Arm-Reaching Paradigm

Published on: October 3, 2020

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长期避开诱导的反复刺激的罗斯特中介性体核的长期避开.

J R Watson, M D De Leon Lopez, E L Carlson

    bioRxiv : the preprint server for biology
    |June 12, 2025
    PubMed
    概括

    刺激面介面体质核 (RMTg) 到腹部体质区域 (VTA) 途径暂时抑制了奖励寻求. 然而,它在提出选择时引发了长期避免奖励,揭示了它在决策中的作用.

    科学领域:

    • 神经科学是一个神经科学.
    • 决策 - 决策 - 决策 - 决策
    • 行为科学 行为科学

    背景情况:

    • 适应性决策涉及平衡成本和收益,多巴胺在奖励寻求中的作用得到了充分研究.
    • 抑制性多巴胺输入对行为抑制和避免学习的贡献不太清楚.
    • 建议RMTg-VTA电路在抑制惩罚下寻求奖励方面的作用,但其对驱动学习的充分性尚不清楚.

    研究的目的:

    • 调查RMTg-VTA通路的光遗传刺激是否足以推动学习并改变成本效益决策.
    • 探索RMTg-VTA通路在行为抑制和避免学习中的作用.

    主要方法:

    • 在老鼠中开发出被动和主动回避任务.
    • 使用RMTg-VTA通路的随机光遗传学刺激与食物奖励交付相结合.
    • 在单选和双选情景中评估了杆压力对奖励的影响.

    主要成果:

    • 在固定比例任务中,RMTg-VTA刺激暂时抑制了寻求奖励的行为.
    • 当面临选择时,RMTg-VTA刺激迅速而持久地改变了选择,导致选择性地避免了配对奖励.
    • 证明RMTg-VTA刺激可以推动避免学习并改变成本效益评估.

    更多相关视频

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    A Conflict Model of Reward-seeking Behavior in Male Rats
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    相关实验视频

    Last Updated: Jun 13, 2025

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    Investigating Pain-Related Avoidance Behavior using a Robotic Arm-Reaching Paradigm

    Published on: October 3, 2020

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    Two Different Real-Time Place Preference Paradigms Using Optogenetics within the Ventral Tegmental Area of the Mouse
    05:50

    Two Different Real-Time Place Preference Paradigms Using Optogenetics within the Ventral Tegmental Area of the Mouse

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    A Conflict Model of Reward-seeking Behavior in Male Rats
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    A Conflict Model of Reward-seeking Behavior in Male Rats

    Published on: February 20, 2019

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    结论:

    • RMTg-VTA路径在学习和决策中发挥着多方面的作用.
    • 这个通路的光遗传刺激足以诱导避免学习和修改寻求奖励的行为.
    • 提供了关于潜在的行为回避和不适应的奖励寻求的神经机制的见解.