意识在威胁灭绝中的作用学习学习
Charlene L M Lam1, Tom J Barry2, Jenny Yiend3
1The State Key Laboratory of Brain and Cognitive Sciences, The University of Hong Kong, Hong Kong; Laboratory of Clinical Psychology and Affective Neuroscience, The University of Hong Kong, Hong Kong.
Consciousness and cognition
|November 17, 2023
概括
灭绝学习对于暴露疗法至关重要,当威胁刺激被隐式暴露时,其效果会降低. 在灭绝学习过程中意识减少,与明确暴露相比,削弱了恐惧反应调制.
科学领域:
- 认知神经科学 认知神经科学
- 心理学 心理学 心理学
背景情况:
- 灭绝学习是暴露疗法的关键机制,用于治疗基于恐惧的疾病.
- 意识意识在成功灭绝已知的威胁中的作用仍在争论中.
研究的目的:
- 调查隐性 (无意识) 与显式 (意识) 暴露于威胁刺激是否调节防御反应.
- 为了比较在减少和完全感知意识的条件下灭绝学习的有效性.
主要方法:
- 在健康的参与者身上,采用了威胁调节范式.
- 条件刺激 (CS) 被呈现为完全意识或使用持续闪光抑制 (CFS) 的感知抑制.
- 瞳孔测量,主观愉悦度评分和意识报告都被记录下来.
主要成果:
- 灭绝期间的瞳孔扩张在不知情的CS (CFS抑制) 中明显大于知情的CS (科恩d=0.57).
- 恢复后的恐惧恢复在CFS抑制的CS中比完全意识到的CS更高.
- 在视觉意识下降的情况下,恐惧反应的灭绝效果较差.
结论:
- 与完全意识的灭绝相比,减少意识的灭绝学习导致恐惧反应的调节较弱.
- 隐式灭绝可能在减少已知的威胁关联方面不那么强大.
- 研究结果表明,意识意识在基于灭绝的干预措施的治疗效果中起着重要作用.
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