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在精神分裂症和双相情感障碍中逆转学习障碍的计算建模揭示了利用奖励的共同失败
Angus W MacDonald1, Edward Patzelt2, Zeb Kurth-Nelson3
1Department of Psychology, University of Minnesota.
Journal of psychopathology and clinical science
|March 10, 2025
概括
精神分裂症和双相情感障碍可能在利用奖励方面存在共同的缺陷,挑战了传统的精神病学区别. 患者的认知障碍可能是精神病中这种共享奖励处理困难的基础.
科学领域:
- 神经科学是一个神经科学.
- 精神病学是一个精神病学.
- 认知心理学 认知心理学
背景情况:
- 克雷佩林主义传统区分精神分裂症和双相情感障碍,奖励敏感性被认为是关键差异.
- 以前的研究表明,这些诊断群体之间的奖励灵敏度不同.
研究的目的:
- 用概率逆转学习任务调查精神分裂症,精神分裂情感障碍和双相情感障碍的奖励处理差异.
- 检查这些患者群体的认知能力和基于奖励的决策之间的关系.
主要方法:
- 利用225名参与者 (精神分裂症,精神分裂情绪障碍,双相情感障碍) 的概率逆转学习任务.
- 采用隐藏的马尔科夫模型来分析逐个审判的决定和反应,以奖励反.
- 评估与任务执行相关的认知能力.
主要成果:
- 没有一个小组在任务应急逆转方面遇到困难.
- 所有患者群体都表现出更多的错误,原因是他们倾向于远离奖励刺激 (获胜切换).
- 认知能力与胜利转换行为有显著的关联.
结论:
- 这些发现挑战了基于奖励敏感性的Kraepelinian二分法.
- 与认知障碍相关的利用奖励的常见机制缺陷可能是情感和非情感精神病的基础.
- 奖励处理缺陷可能代表严重精神疾病的跨诊断特征.
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