大型抑郁症中记忆回忆,负面影响和情绪调节的神经代理之间的时间相互作用
Christina A Michel1,2, Mike Schmidt3,4, J John Mann3,4,5
1Division of Molecular Imaging and Neuropathology, New York State Psychiatric Institute, New York, NY, USA. christina.michel@nyspi.columbia.edu.
Molecular psychiatry
|April 4, 2025
概括
大型抑郁症 (MDD) 涉及到情绪调节 (ER) 和记忆的受损. 在MDD中,回忆负面记忆未能减少负面影响 (NA) 或增加ER,与健康个体不同.
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) 的特点是情绪调节 (ER) 和自传记忆的缺陷.
- 在MDD中,这些过程和情绪障碍之间的实时相互作用仍然不太清楚.
研究的目的:
- 通过使用基于机器学习的神经特征,研究MDD个体中负面影响 (NA),ER和自传记忆之间的动态相互作用.
- 检查记忆回忆和ER策略期间海马活动如何实时预测NA和ER的变化.
主要方法:
- 使用功能性磁共振成像 (fMRI) 负自传记忆任务在没有药物的MDD个体 (N=45) 和健康的志愿者 (HV;N=38).
- 雇佣的机器学习签名 (NA的PINES,ER的ERS) 来量化一时一刻的NA和ER.
- 评估了海马活动 (记忆参与) 和PINES和ERS的后续变化之间的预测关系.
主要成果:
- 在两组中,在记忆回忆和沉浸过程中海马活动增加预测了增加的NA (PINES).
- 在HVs中,海马活动在距离预测增加ER (ERS) 但不是NA;在MDD中,它预测增加NA但不是ER.
- HVs显示NA-内存连接减少和ER后距离增加,而MDD显示NA-内存连接持久而没有随后的ER增加.
结论:
- 记忆参与,NA和ER之间的异常实时相互作用是MDD的特征.
- 患有MDD的个体在引入ER时表现出缺陷,并在负面记忆回忆后对NA进行无效调节.
- 这些发现突出了MDD的潜在治疗目标,重点是改善在负面记忆处理期间的ER参与和NA调制.
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