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Electroencephalogram signal quality real-time judgment method

A technology of EEG signal and determination method, which is applied in the field of EEG signal digital signal processing, can solve problems such as inability to recognize EEG signals, misjudgment, and EEG signal determination and analysis, so as to improve user experience, reduce delay, and calculate fast effect

Inactive Publication Date: 2016-06-29
南京衡思健康科技有限公司
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0005] However, there is currently no effective method for determining and analyzing the quality of EEG signals, and it is impossible to effectively identify the EEG signals captured by the EEG acquisition device to distinguish good EEG signals from bad EEG signals. A large number of misjudgments occurred in the EEG application analysis of

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  • Electroencephalogram signal quality real-time judgment method
  • Electroencephalogram signal quality real-time judgment method
  • Electroencephalogram signal quality real-time judgment method

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Embodiment Construction

[0043] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0044] see figure 1 As shown, the embodiment of the present invention provides a real-time determination method of EEG signal quality, comprising the following steps:

[0045] S1: Receive and store the EEG signal data from the EEG acquisition device in real time; generate a time window for EEG analysis, and go to S2;

[0046] S2: Using the generated time window, take out the EEG signal segment corresponding to the time window from the stored EEG signal data, and transfer to S3;

[0047] S3: Calculate the average value of the current EEG signal segment according to the value of each signal data piece contained in the EEG signal segment in the current time window, and turn to S4;

[0048] S4: Calculate the standard deviation of the EEG signal segment in the current time window according to the calculated average value and the value of e...

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Abstract

The invention discloses an electroencephalogram signal quality real-time judgment method, and relates to the field of electroencephalogram signal digital signal processing.The method comprises the following steps that electroencephalogram signal fragments corresponding to a generated time window are obtained; the average value of the electroencephalogram signal fragments in the current time window is calculated, and the standard difference of the electroencephalogram signal fragments in the current time window is calculated through the average value; the volatility judgment result of the electroencephalogram signal fragments in the current time window is obtained through the calculated standard difference; by means of the volatility judgment result of the current electroencephalogram signal fragments and the volatility judgment result of original electroencephalogram signal fragments, the quality of the current electroencephalogram signal is judged.By means of the method, the electroencephalogram signal quality can be rapidly and effectively judged and analyzed in real time, and accuracy of follow-up electroencephalogram application analysis is effectively ensured.

Description

technical field [0001] The invention relates to the field of digital signal processing of electroencephalogram signals, in particular to a method for real-time judging the quality of electroencephalogram signals. Background technique [0002] EEG (electroencephalogram) is an electrical signal sent by the human brain. This signal is extremely weak, generally only a few microvolts to hundreds of microvolts. Therefore, EEG signals need to be captured by a dedicated EEG acquisition device. The EEG sensor of the EEG acquisition device generally consists of an electrode and a reference electrode or a plurality of electrodes and a reference electrode. Due to the different electrode standard potentials of the electrode materials, there will be a voltage difference between the electrode and the reference electrode after touching the human skin. Because these voltage differences tend to be in an unstable state within a few seconds, and these voltage differences are often much large...

Claims

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Application Information

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IPC IPC(8): A61B5/0476A61B5/04
CPCA61B5/7221A61B5/316A61B5/369
Inventor 曹锋董豪游晓光尹海龙郑义
Owner 南京衡思健康科技有限公司
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