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异常的奖励学习,但不是负面的强化学习,与抑郁症状有关:注意力视角
Nimrod Hertz-Palmor1,2, Danielle Rozenblit1, Shani Lavi1
1School of Psychological Sciences, Tel-Aviv University, Tel-Aviv, Israel.
Psychological medicine
|August 29, 2023
概括
患有高抑郁症症状的个体很难将奖励学习归纳为注意力,特别是在积极强化方面. 这种注意力学习的缺陷没有被观察到与负增强.
科学领域:
- 认知神经科学 认知神经科学
- 临床心理学 临床心理学
- 抑郁症的神经科学 抑郁症的神经科学
背景情况:
- 异常的奖励功能是抑郁症的一个已知的因素.
- 奖励学习对注意力分配的影响仍未得到充分研究.
研究的目的:
- 调查基于奖励的学习如何影响抑郁症患者的注意力.
- 探索正面与负面增强对注意力学习的影响.
主要方法:
- 两项研究使用了视线条件范式,使用音乐 (正增强) 或删除声音 (负增强).
- 患有高 (HD) 和低 (LD) 抑郁症状的参与者被训练来转移目光.
- 在训练之前,训练期间和训练后测量了注意力分配.
主要成果:
- 在训练期间,HD和LD参与者都学会了转移注意力 (在线学习).
- 只有LD参与者在训练后使用积极增强来概括这种学习.
- 两个小组都将学习与负增强进行了概括.
- 患HD的参与者在负面强化时显示出更快的初始学习速度.
结论:
- 患有高抑郁症的个体表现出缺乏基于奖励的注意力学习的概括性,特别是在积极强化方面.
- 这种赤字是积极增强的特征,因为消极增强发生了泛化.
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