结合跨直流刺激和认知训练对大脑微观结构和晚年抑郁症网络同质性的影响:试点研究
Junghee Ha1,2, Yu Fang1, Chandan Kittur1
1Department of Neurology and Neurological Sciences, Stanford University, Stanford, CA, 94305, USA.
Journal of affective disorders reports
|September 25, 2025
概括
认知训练改善了老年人患有抑郁症和认知衰退的白质完整性. 晶白质变化预测了临床结果,但跨直流刺激 (tDCS) 没有提供额外的益处.
科学领域:
- 神经科学是一个神经科学.
- 老年学是一门学科.
- 精神病学是一个精神病学.
背景情况:
- 晚年抑郁症和认知衰退往往同时发生,治疗选择有限.
- 神经调节显得有前途,但它对大脑连接和白质的影响尚不清楚.
- 对这个脆弱群体来说,研究组合干预措施至关重要.
研究的目的:
- 评估认知训练加上跨直流刺激 (tDCS) 对白质微观结构和默认模式网络 (DMN) 同质性的影响.
- 为了评估这种结合方法在有认知缺陷和抑郁症状的老年人中.
主要方法:
- 一个双盲,随机化模拟受控试验,将认知训练与阳道或模拟tDCS进行比较.
- 磁共振成像 (MRI) 在5周内评估了DMN同质性和白质微观结构.
- 参与者是患有晚年抑郁症和认知衰退的老年人.
主要成果:
- 认知训练显著改善了白质完整性 (微分异性),无论tDCS.
- 超直流刺激 (tDCS) 没有提高白质完整性或DMN均性.
- cingulum 白质完整性的改善与更好的抑郁症状,认知和BDNF水平相关.
结论:
- 仅仅是认知训练可以提高老年人患有抑郁症和认知障碍的白质完整性.
- 晶白质完整性的变化可以预测临床结果.
- 在这项研究中,跨直流刺激 (tDCS) 对白质或网络均性没有提供额外的益处.
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