在灭绝过程中发出未配对无条件刺激的信号不会影响它们减少条件恐惧的更新的效果
Ottmar V Lipp1, Camilla C Luck2, Luke J Ney3
1School of Psychology and Counselling, Queensland University of Technology, Australia; Curtin School of Population Health, Curtin University, Australia.
概括
在灭绝训练期间呈现未配对的刺激会减少恐惧的更新. 这种效应并不能通过抑制条件来解释,但可能涉及试验序列学习或唤醒.
科学领域:
- 心理学 心理学 心理学
- 神经科学是一个神经科学.
- 行为科学 行为科学
背景情况:
- 灭绝训练减少了学习的恐惧反应.
- 恐惧更新发生在不同于灭绝的环境中测试时.
- 灭绝期间未配对的无条件刺激 (US) 可以减少恐惧的更新.
研究的目的:
- 调查帕夫洛夫抑制条件是否解释了减少恐惧的更新.
- 检查在灭绝训练期间未配对的美国演示的作用.
- 测试其他解释,如试验序列学习或唤醒.
主要方法:
- 使用了ABA更新范式,有三个组:标准 (没有美国),未被标记的美国和在灭绝期间被标记的美国.
- 灭绝培训发生在与收购和更新测试不同的环境中.
- 在更新和重新获取测试期间测量了皮肤电条件反应.
主要成果:
- 在标准组中观察到恐惧反应的更新.
- 在美国未被标记的小组中,没有恐惧的更新,重复了之前的发现.
- 在美国的Signalled US小组中,恐惧的更新也没有出现.
结论:
- 结果不支持抑制性条件对减少恐惧更新的解释.
- 美国在灭绝期间的不配对呈现减少了恐惧的更新.
- 试验序列学习或唤醒可能更好地解释这些发现.
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