Quantitative electroencephalography (QEEG)-electrical neuroimaging has been underutilized in general neurology practice. Recent advances in computer technology have made this electrophysiological testing relatively inexpensive as well as precise in identifying brain areas with electrical dysfunction related to either traumatic injury or neurodegenerative process. In this article, the author presents 2 cases that can be frequently encountered in every general neurological practice: case of early dementia and traumatic brain injury. The clinical usefulness of QEEG is demonstrated by showing evidence of electrical abnormalities and networks dysfunctions (including an elevation of frontal/temporal delta and theta powers as well as abnormalities in functional connectivity). In addition, the correlation of QEEG and findings from structural imaging technique-magnetic resonance imaging diffusion tensor imaging and another functional imaging-positron emission tomography is presented.

中文翻译：

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QEEG 作为评估痴呆症和创伤性脑损伤早期认知变化的有用工具

定量脑电图 (QEEG)-电神经成像在一般神经病学实践中未得到充分利用。计算机技术的最新进展使这种电生理测试相对便宜，并且可以精确地识别与创伤性损伤或神经退行性过程相关的电功能障碍的大脑区域。在本文中，作者介绍了在每个一般神经病学实践中经常遇到的 2 个案例：早期痴呆和创伤性脑损伤的案例。QEEG 的临床实用性通过显示电异常和网络功能障碍的证据（包括额叶/颞叶 delta 和 theta 功率升高以及功能连接异常）来证明。此外，