堀口分形维数作为评估弥漫性轴索脑损伤患者对声音刺激反应的一种方法。
Higuchi Fractal Dimension as a Method for Assessing Response to Sound Stimuli in Patients with Diffuse Axonal Brain Injury.
机构信息
Junior Researcher, Human Higher Nervous Activity Laboratory Institute of Higher Nervous Activity and Neurophysiology, Russian Academy of Sciences, 5A Butlerova St., Moscow, 117485, Russia.
出版信息
Sovrem Tekhnologii Med. 2021;12(4):63-70. doi: 10.17691/stm2020.12.4.08. Epub 2020 Aug 27.
UNLABELLED
was to study the fractal dimension of the EEG signal by the Higuchi's method in patients with diffuse axonal injury (DAI) of the brain.
MATERIALS AND METHODS
The study was performed in 28 patients with DAI of different severity and 13 sex- and age-matched controls. The Higuchi's method of fractal dimension was used to investigate brain response to sound stimuli of different emotional coloring as well as the features of the EEG signal in the resting state.
RESULTS
The EEG data demonstrated the highest values of fractal dimension in patients with DAI in the resting state. The values of fractal dimension in different emotional states considerably differ both in healthy subjects and in those with DAI. An increase in fractal dimension in response to stimuli occurs predominantly at the frequency of the theta rhythm in the control group and the frequency of the alpha rhythm in the patients with severe DAI.
CONCLUSION
Higuchi fractal dimension can be used as a complementary diagnostic tool that allows differentiating perception of emotionally significant audio information in patients with brain injury.
目的
通过 Higuchi 方法研究脑弥漫性轴索损伤（DAI）患者的 EEG 信号分形维数。
材料和方法
研究纳入了 28 例不同严重程度的 DAI 患者和 13 名性别和年龄匹配的对照组。采用 Higuchi 方法研究脑对不同情绪色彩声音刺激的反应以及静息状态下 EEG 信号的特征。
结果
在静息状态下，DAI 患者的 EEG 数据显示出最高的分形维数值。在健康受试者和 DAI 患者中，不同情绪状态的分形维数值有很大差异。在对照组中，刺激反应的分形维数值主要增加在 theta 节律频率，而在严重 DAI 患者中则增加在 alpha 节律频率。
结论
Higuchi 分形维数可用作补充诊断工具，有助于区分脑损伤患者对情感意义重大的音频信息的感知。
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