在安赫多尼亚中,基于努力的异常奖励动态
Hailing Wen1, Menglin Wu1, Zhao Wang1
1Department of Psychology, Dalian Medical University, 9 West Section, Lvshun South Road, Dalian 116044, China.
Cerebral cortex (New York, N.Y. : 1991)
|May 14, 2024
概括
厌乐症是奖励缺陷的症状,涉及到不太了解的动机功能障碍. 这项研究揭示,患有无症的人对努力和奖励表现出低效的神经反应,影响了动机.
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.
- 认知科学 认知科学
背景情况:
- 无情是各种精神疾病的核心症状,其特点是减少快乐和奖励责任.
- 安赫多尼亚的动机缺陷与成本效益决策的改变有关,但潜在的神经动态仍然不清楚.
- 了解努力支出如何调节神经对奖励的反应,对于阐明无情症的动机功能障碍至关重要.
研究的目的:
- 研究不同程度的无情感的个体中努力-奖励相互作用的神经动态.
- 检查如何努力前性和后性影响奖励处理.
- 为了确定高和低无团之间的基于努力的奖励处理中的特定神经差异.
主要方法:
- 使用基于努力的货币激励来延迟任务.
- 使用事件相关潜力 (ERP) 分析来评估神经动态.
- 根据调查问卷得分,招募了一个非临床样本,分为高和低无症组.
主要成果:
- 努力前性地降低了对条件变化的负面性和目标-P3的奖励效应,而后性地提高了对反-P3.3的结果效应.
- 与低安赫多尼亚组相比,高安赫多尼亚组在努力支出期间对目标-P3的努力效应减少.
- 患有高无症的个体在努力后的反-P3期间,在中性试验中表现出增加的努力增强效应.
结论:
- 在基于努力的奖励处理过程中,无情感与低效的神经控制和动机分配有关.
- 结果突出了从努力准备到生产的神经动态中发生的干扰,这些干扰发生在无症患者身上.
- 这项研究提供了洞察力的神经机制背后的动机缺陷在anhedonia.
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