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A method and system for evaluating the level of EEG inhibition

An evaluation system and EEG technology, applied in the field of medical devices, can solve problems such as insufficient accuracy, and achieve the effect of increasing accuracy and enhancing application value

Active Publication Date: 2018-01-16
SHENZHEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method is seriously insufficient in anti-interference. If the EEG signal is subject to various interferences (such as body movement, oculoelectricity, electromyography, electrocautery, defibrillation, etc.), it will be easy to judge the noise as a burst signal, resulting in the calculation results of the above parameters. not accurate enough

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  • A method and system for evaluating the level of EEG inhibition
  • A method and system for evaluating the level of EEG inhibition
  • A method and system for evaluating the level of EEG inhibition

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Embodiment 1

[0061]The application provides a method for evaluating the level of EEG suppression, including the process of calculating the EEG suppression level index. The process of calculating the EEG suppression level index includes: segmenting the EEG signal, removing the noise segment, and judging the number of remaining segments. Outburst signal and suppression signal, and then according to the ratio of the number of suppression signal segments to the number of segments after removing the noise segment, the suppression level index was calculated.

[0062] Such as figure 2 As shown, the process of calculating the EEG suppression level index of the present application specifically includes the following steps:

[0063] Step 102: collecting the latest EEG signal with a predetermined duration, and dividing the EEG signal into multiple segments on average. The segmented EEG signal, that is, the segmented EEG signal, is actually a segment of the EEG signal.

[0064] The EEG signal proce...

Embodiment 2

[0100] The EEG suppression level evaluation system of the present application, one embodiment thereof, the system is used to segment the EEG signal, remove the noise segment therein, judge the burst signal and the suppression signal in the remaining number of segments, and then according to the suppression signal The ratio of the number of segments to the number of segments after removing the noise segment was calculated to obtain the inhibition level index.

[0101] Such as Figure 5 As shown, the EEG suppression level evaluation system of the present application includes an acquisition module, a calculation module, a judgment module and a processing module. The collection module is used to collect the latest EEG signal of a predetermined duration, and divides the EEG signal into multiple segments on average; the calculation module is used to calculate the median value of the standard deviation of the segmented EEG signal and the difference between the standard deviation of t...

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Abstract

The present application discloses a method for evaluating the level of EEG inhibition, including the process of calculating the EEG inhibition level index. The process of calculating the EEG inhibition level index includes: segmenting the EEG signal, removing the noise in it, and judging the number of remaining segments. Then, according to the ratio of the number of suppression signal segments to the number of noise-removed segments, the suppression level index is calculated. The application also discloses a system for evaluating the level of EEG suppression. This application divides the EEG signal into segments, and then calculates the suppression level index according to the ratio of the number of suppression signal segments to the number of segments after removing the noise segment. Since the noise segment is removed, the noise can be effectively removed and the EEG signal suppression level is increased. The accuracy of index calculation improves the application value of this parameter.

Description

technical field [0001] The present application relates to medical devices, in particular to a method and system for evaluating the level of EEG suppression. Background technique [0002] EEG (Electroencephalograph, electroencephalogram) burst suppression signal is a kind of EEG signal characteristic that only appears under special conditions (such as deep anesthesia), and it has only been gradually studied in recent years. The waveform characteristics of EEG burst suppression signal show that the state of EEG suppression signal with low amplitude value alternates with the state of high frequency and high amplitude EEG burst signal, and this alternating change has no periodicity. Such as figure 1 Shown is a segment of the burst suppression signal. Among them, E is the noise, F is the burst signal, and G is the suppression signal. When the burst suppression state appears, the metabolic rate of the brain will be reduced to the minimum. If the state of burst suppression occur...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/0476
Inventor 叶继伦王凡张旭孙纪光陈思平
Owner SHENZHEN UNIV