没有抑郁症的焦虑症状与认知控制网络 (CNN) 功能障碍有关:一项fNIRS研究
Qinqin Zhao1, Zheng Wang2, Caihong Yang3
1Dean's Office, MianYang Teachers' College, Mianyang, China.
Psychophysiology
|March 15, 2024
概括
即使没有抑郁症,焦虑也与关键的认知控制区域的脑活动降低有关. 具体来说,左前视野和右背侧前额皮质中氧血球减少可能表明焦虑的神经标志物.
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:
- 焦虑经常与抑郁症同时发生,这使得对焦虑独特的神经支的研究变得复杂.
- 很少有研究研究了焦虑的神经机制,同时控制了伴随性抑郁症.
研究的目的:
- 为了研究不同程度的焦虑患者皮质激活的差异,独立于抑郁水平.
- 为了识别潜在的神经标记焦虑症状与抑郁症状不同.
主要方法:
- 利用功能近红外光谱 (fNIRS) 测量366名受试者 (139名健康者,117名轻度焦虑者,110名严重焦虑者) 的氧血球 (oxy-Hb) 度.
- 使用医院焦虑和抑郁量表 (HADS) 评估焦虑和抑郁,并通过口头流利任务 (VFT) 评估认知功能.
- 进行了相关性和ANOVA分析,以检查焦虑严重程度和特定大脑区域的皮质氧-Hb水平之间的关系.
主要成果:
- 焦虑的严重程度与左前视野 (lFEF) 和右背侧前视野 (rDLPFC) 的oxy-Hb度有显著的负相关性.
- 与健康对照人相比,患有严重焦虑症的个体在lFEF和rDLPFC中表现出明显较低的oxy-Hb度.
- 这些发现表明,这些区域皮质活动减少与抑郁症独立的焦虑有关.
结论:
- 在lFEF和rDLPFC的皮质活动下降可能作为焦虑症状的神经标志物,当抑郁症缺席或控制时.
- 即使没有并发性抑郁症,焦虑症状也可能源于认知控制网络 (CCN) 的功能障碍,涉及lFEF和rDLPFC.
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