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在双相情感障碍亚型中,奖励和惩罚的学习缺陷在双相情感障碍亚型中

Arnaud Pouchon¹, Fabien Vinckier², Clément Dondé³

¹Univ. Grenoble Alpes, Inserm, U1216, CHU Grenoble Alpes, Grenoble Institut Neurosciences, 38000 Grenoble, France; Department of Psychiatry, CHU Grenoble Alpes, 38000 Grenoble, France.

Journal of affective disorders

|August 17, 2023

概括

患有双相情感障碍 (BD) 的人表现出奖励学习缺陷,与惩罚相比,对奖励的敏感性降低. 计算建模揭示了 BD 亚型中的独特学习机制,有助于未来的预防和管理策略.

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.
计算精神病学是一种计算精神病学.

背景情况:

奖励敏感性对于双相情绪障碍 (BD) 的情绪调节至关重要,但其在缓解期间的作用仍然存在争议,可能是由于人口异质性.
现有的研究缺乏对BD中奖励偏差的明确评估,导致过敏与低敏感性假设之间存在冲突.
这项研究调查了在缓解期间BD患者的奖励最大化与惩罚回避学习.

研究的目的:

在缓解期间区分奖励最大化和避免惩罚的学习机制在双相I (BD-I) 和双相II (BD-II) 障碍.
在BD亚型和健康对照 (HC) 中计算模型和分析强化学习表现.
为了更好地了解 BD 中的奖励处理,以改善临床管理.

主要方法:

招募的患者有BD-I (n=45),BD-II (n=34) 和匹配的HC (n=30).
进行了工具学习任务,以分离基于奖励的和基于惩罚的强化学习.
采用计算建模来分析强化学习机制和选择随机性.

主要成果:

与HC相比,在两种BD亚型中都观察到显著的奖励学习缺陷,其特点是相对于惩罚敏感度的奖励敏感度较低.
计算建模表明,与BD-I相比,BD-II的选择随机性更高.
与BD-II患者相比,BD-I患者在避免惩罚的学习中表现更好.

结论:

这些发现支持双相情感障碍中奖励低敏感性理论.
计算建模突出了不同的潜在机制,这些机制有助于 BD 中类似的行为结果,为差异诊断提供了一个工具.
对这些学习过程的更好理解可以促进双相情感障碍的预防和管理.

关键词:

双极性障碍 ((1)) 是一种双极性疾病.计算生物学 ((6)) 是一个学习的过程中,学习的过程中受到的惩罚(5)强化 (二) 强化 (二)奖励 (奖励) 是一个奖励 (奖励)

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