记忆回忆,负面影响和情绪调节的神经代理之间的时间相互作用在重大抑郁症中
Christina Michel1, Mike Schmidt1, J John Mann2
1Columbia University Irving Medical Center.
Research square
|June 10, 2024
概括
患有严重抑郁症 (MDD) 的人很难调节情绪和回忆回忆. 这项研究揭示了记忆参与如何影响负面影响和实时情绪调节,提供了新的临床目标.
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:
- 大型抑郁症 (MDD) 涉及到情绪调节 (ER) 和自传记忆的受损.
- 这些缺陷和MDD中情绪障碍之间的实时相互作用仍然不清楚.
- 基于机器学习的神经签名提供了一种持续量化负面影响 (NA),ER和记忆参与的方法.
研究的目的:
- 为了研究负面影响,情绪调节和自传记忆之间的动态相互作用,在没有药物治疗的MDD患者中进行.
- 检查记忆回忆,沉浸和疏远期间海马活动如何预测负面影响和情绪调节的变化.
- 为了确定潜在的神经机制背后的情绪障碍在MDD相关的记忆处理和情绪调节.
主要方法:
- 功能性磁共振成像 (fMRI) 用于没有药物治疗的MDD患者 (N=45) 和健康的志愿者 (HV;N=38).
- 参与者完成了一项任务,涉及回忆,沉浸在,并远离负面的自传记忆.
- 机器学习签名 (NA的PINES,ER的ERS) 量化了实时影响和调节,而海马活动指数了记忆参与.
主要成果:
- 在不同组中,在记忆回忆和沉浸过程中,海马活动的增加预测了负面影响的增加 (PINES).
- 在健康的志愿者中,海马活动在隔离期间预测了情绪调节 (ERS) 的增加,但不是负面影响.
- 在MDD中,远离期间的海马活动预测了负面影响 (PINES) 的增加,但不是情绪调节 (ERS),表明连接被破坏.
结论:
- MDD的特点是记忆参与和情绪调节之间的异常实时关系.
- 健康个体在记忆再激活后显示出负面影响联系的减少和ER的增加,与MDD患者不同.
- 在吸引ER和调节负面影响后回忆负面记忆的缺陷可能会导致MDD情绪障碍,并代表治疗目标.
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