利用便携式设备探索α波段脑电图神经反馈的神经机制：前后对比研究

IF 2.3 4区医学 Q3 ENGINEERING, BIOMEDICAL

Medical Engineering & Physics Pub Date : 2025-06-11 DOI:10.1016/j.medengphy.2025.104380

Xiaoyu Chen , Li Sui

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引用次数: 0

摘要

目的探讨利用便携式脑电图系统进行α波段神经反馈（NF）训练的神经机制，并评价其在实际应用中增强认知能力的可行性。方法16例健康青年（M=24.28±1.31岁）完成8组α波段NF训练。采用可穿戴式16通道设备采集训练前后的脑电信号。通过功率谱分析、源定位（sLORETA）和五个频段的功能连接分析来评估神经变化。结果，紧张导致theta， alpha， beta和gamma波段的功率增加。来源分析显示，低频电流密度下降，高频电流活动增加，这反映了神经处理效率的提高和认知网络参与的增强，这一点得到了之前研究的支持。功能连通性表明，与工作记忆有关的额叶、顶叶和枕叶区域的同步性较强。结论便携式α波段神经反馈训练可诱导多频段和脑网络的广泛神经调制，支持可穿戴脑电图系统用于无障碍认知训练的可行性。

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Exploring the neural mechanisms of alpha-band EEG neurofeedback using portable devices: A pre-post comparative study

Objective

This study aimed to clarify the neural mechanisms of alpha-band neurofeedback (NF) training using a portable EEG system and to evaluate its feasibility for cognitive enhancement in practical settings.

Methods

Sixteen healthy young adults (

M = 24.28 \pm 1.31

years) completed eight sessions of alpha-band NF training. EEG signals were collected before and after training with a wearable 16-channel device. Neural changes were assessed using power spectral analysis, source localization (sLORETA), and functional connectivity analysis across five frequency bands.

Results

Training led to increased power in theta, alpha, beta, and gamma bands. Source analysis showed decreased current density in lower frequencies and increased activity in higher bands, reflecting a shift toward more efficient neural processing and enhanced cognitive network engagement, as supported by previous studies. Functional connectivity revealed stronger synchronization among frontal, parietal, and occipital regions involved in working memory.

Conclusion

Portable alpha-band neurofeedback training induces widespread neural modulation across multiple frequency bands and brain networks, supporting the feasibility of wearable EEG systems for accessible cognitive training.

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来源期刊

Medical Engineering & Physics 工程技术-工程：生物医学

CiteScore

4.30

自引率

4.50%

发文量

172

审稿时长

3.0 months

期刊介绍： Medical Engineering & Physics provides a forum for the publication of the latest developments in biomedical engineering, and reflects the essential multidisciplinary nature of the subject. The journal publishes in-depth critical reviews, scientific papers and technical notes. Our focus encompasses the application of the basic principles of physics and engineering to the development of medical devices and technology, with the ultimate aim of producing improvements in the quality of health care.Topics covered include biomechanics, biomaterials, mechanobiology, rehabilitation engineering, biomedical signal processing and medical device development. Medical Engineering & Physics aims to keep both engineers and clinicians abreast of the latest applications of technology to health care.