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Investigating Rostral Anterior Cingulate Cortex in Major Depression: An EEG Source Localization Approach.

机译:调查在严重抑郁症的延髓前扣带回皮层:一种脑电图源定位方法。

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摘要

Major Depressive Disorder (MDD) is the most widely prevalent psychiatric disorder, and yet it is not possible to predict if and when a patient will respond to medication. To improve treatment of depression it is important to increase understanding of the neurobiology of MDD and develop biomarkers of treatment response. Both of these goals may be advanced through an investigation of the rostral anterior cingulate cortex (rACC). The rACC is an integral part of the frontal-limbic network, which exhibits abnormalities in MDD, and which may predict response to treatment. The approach taken in this dissertation utilizes electroencephalographgy (EEG) source localization, which allows for tying together EEG literature with other neuroimaging modalities. Using EEG source localization we investigate the rACC and its role in the neurobiology of MDD. We show differences in EEG source localization in the rACC, among numerous other areas, between depressed patients and healthy controls. We also show that theta band current density in the rACC may predict response to antidepressant medication. Both response to treatment and rACC activity may be influenced by early improvement in symptoms, as well as prior treatment with antidepressant medication. Furthermore, we find evidence that rACC activity changes over time, and may reflect a patient's state of responsiveness to medication. Overall, this dissertation supports the idea that rACC activity provides insight into the neurobiology of MDD, and offers the possibility of improving treatment.
机译:重度抑郁症(MDD)是最广泛流行的精神病,但尚无法预测患者是否以及何时对药物产生反应。为了改善抑郁症的治疗,重要的是增加对MDD神经生物学的理解并开发治疗反应的生物标志物。这两个目标都可以通过对鼻前扣带回皮质(rACC)的研究来实现。 rACC是额叶边缘网络的组成部分,它在MDD中表现出异常,并且可以预测对治疗的反应。本文采用的方法是利用脑电图(EEG)源定位,这可以将脑电图文献与其他神经影像学方法联系在一起。使用脑电图源定位,我们调查了rACC及其在MDD神经生物学中的作用。我们在抑郁症患者和健康对照之间的许多其他领域显示了rACC中脑电图源定位的差异。我们还显示,rACC中的θ带电流密度可以预测对抗抑郁药的反应。对治疗的反应和rACC活性都可能受症状的早期改善以及以前使用抗抑郁药治疗的影响。此外,我们发现有证据表明rACC活性会随时间变化,并可能反映出患者对药物反应的状态。总体而言,本文支持rACC活性为MDD神经生物学提供了见识,并为改善治疗提供了可能性。

著录项

  • 作者

    Korb, Alexander Samuel.;

  • 作者单位

    University of California, Los Angeles.;

  • 授予单位 University of California, Los Angeles.;
  • 学科 Neurobiology.;Mental health.;Radiology.
  • 学位 Ph.D.
  • 年度 2010
  • 页码 138 p.
  • 总页数 138
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

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