A study on quality assessment of the surface EEG signal based on fuzzy comprehensive evaluation method

Computer Assisted Surgery

Jingyang Lu¹  Yan Zhang²  Qisong Wang²  Jinwei Sun²  Dan Liu²  Xin Liu³ 

[1] Intelligent Fusion Technology, Inc., Germantown, MD, US;School of Electrical Engineering & Automation, Harbin Institute of Technology, Harbin, China;School of Transportation Science and Engineering, Harbin Institute of Technology, Harbin, China;

关键词: EEG signal;    signal quality evaluation;    fuzzy comprehensive evaluation;   

DOI  :  10.1080/24699322.2018.1557888

来源: publisher

【 摘 要 】

Surface EEG (Electroencephalography) signal is vulnerable to interference due to its characteristics and sampling methods. So it is of great importance to evaluate the collected EEG signal prior to use. Traditional methods usually use the impedance between skin and electrode to estimate the quality of the EEG signal, which has shortcomings such as monotonous features, high false positive rates, and poor real-time capability. Aiming at addressing these issues, this paper presents a novel model of EEG quality assessment based on Fuzzy Comprehensive Evaluation method. The developed model employs amplitude, power frequency ratio, and alpha band PSD (Power Spectral Density) ratio of resting EEG signal as evaluation factors, and performs a quantitative assessment of the signal quality. Experiments show that the proposed model can significantly determine the EEG signal quality. In addition, the model is simple in implementation with low computational complexity, and is able to present the EEG quality evaluation results in real time. Before the formal measurement, collecting short-term resting EEG data, and evaluating the EEG signal quality and current signal acquisition environment using the model, the collection efficiency of qualified EEG signals can be greatly improved.

【 授权许可】

CC BY