在负预测错误学习中的强化概率和速率
David J Sanderson1, Joseph M Austen1, Anthony McGregor1
1Department of Psychology, Durham University.
概括
小鼠学习强化率和概率,但强化率驱动预期反应. 强化学习的概率会影响预期强化学习时间的反应,显示持续学习.
科学领域:
- 行为神经科学 行为神经科学
- 学习和记忆的学习和记忆
背景情况:
- 关联式学习理论通常侧重于每次试验的强化概率.
- 然而,学习经常受到强化率的影响,这表明时间线索属性至关重要.
研究的目的:
- 在小鼠的食欲Pavlovian调节中,研究每个试验的强化概率的作用.
- 为了区分强化率与概率对条件响应的影响.
主要方法:
- 四个实验涉及小鼠的食欲帕夫洛夫式调节.
- 操纵每个试验的强化概率,同时控制强化速率.
- 检查获取,总结,过度预期,灭绝和探测试验,测量后CS响应.
主要成果:
- 每个试验的强化概率没有显著影响获取,总结,过度预期或灭绝.
- 探头试验显示,与100%的强化相关的线索引起了比50%的强化更大的后CS反应.
- 总结试验也显示了强化概率的影响.
结论:
- 强化率主要决定了条件刺激 (CS) 期间的预期反应.
- 强化概率影响在预期的强化时间响应.
- 学习在经验持续时间和每次事件中持续地发生,独立于持续时间.
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