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A Method for Removing Artifact Signals in EEG Signals

A technology of EEG signals and artifacts, applied in the field of signal processing, can solve problems such as the selection of thresholds and complex calculations of wavelet transform

Active Publication Date: 2020-11-03
EEGSMART TECHNPLOGY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wavelet transform method requires that the frequency bands of signal and noise cannot be aliased, but in fact the frequency bands of EEG and eye movement artifacts are aliased
In addition, the calculation of wavelet transform is complicated, and there is a problem of threshold selection

Method used

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  • A Method for Removing Artifact Signals in EEG Signals
  • A Method for Removing Artifact Signals in EEG Signals
  • A Method for Removing Artifact Signals in EEG Signals

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Embodiment Construction

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings, so that those skilled in the art can implement it with reference to the description.

[0032] Such as figure 1 As shown, the method for removing artifact signals in EEG signals according to the present invention comprises the following steps:

[0033] Step 101, collect EEG signals, and the collected EEG signals contain artifact signals.

[0034] In this step, the electroencephalogram signal can be collected by the electroencephalogram single guide device, but the collected electroencephalogram signal will inevitably contain artifact signals, for example, the electroencephalogram signal polluted by oculoelectric artifacts. It should be noted that the collected EEG signals are not limited to single-lead signals, but can also be multi-lead signals, and the advantage of the present invention is that it can process single-lead signals, which cannot be solved in the...

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Abstract

The present invention disclosed a method of pseudo -trace signal in the Electrical Electrical Signal, including the following steps: Step 1, collecting Electrical Electrical Signals, which contains pseudo -trace signals in the collected brain signal;The signal contains the electrical signal segment of the pseudo -trace signal; step 3, smooth the electrical signal segment detected above to obtain a smooth signal segment containing the pseudo -trace signal;The smooth signal segment is divided to obtain the dehuminar signal of the falsification in the time domain.Step 5, intercept the brain electrical signal without pseudo -trace signals on the front and rear ends of the brain signal segment as a net signal; step 6, determine the low -frequency part of the proofed trace signal based on the low -frequency part of the intercepted net signal.And according to the low -frequency part of the de -pseudo -pseudo -pseudo -trace signal and the mid -to -high frequency part of the de -pseudo -pseudo -pseudo -traces, the de -pseudo -pseudo -pseudo -electronics signal is obtained.

Description

technical field [0001] The invention relates to a signal processing method, in particular to a method for removing artifact signals in electroencephalogram signals. Background technique [0002] Electroencephalography (Electroencephalography, EEG) is a brain potential change recorded from the scalp of a human or animal, reflecting the functional state of the brain. EEG has high time resolution, and has extremely important application value and development prospects in the diagnosis and treatment of brain diseases, cognitive function and psychology. [0003] In medicine, brain diseases can be checked by analyzing the characteristics of EEG signals, for example, in the diagnosis of neurological diseases such as epilepsy and brain tumors. However, due to the time-varying sensitivity of EEG itself, its signal is easily polluted by irrelevant noise, thus forming various EEG artifacts. Artifacts have plagued the development of EEG analysis techniques and limited their applicatio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/0476G06K9/00
CPCA61B5/7203A61B5/7235A61B5/7257A61B5/369G06F2218/04
Inventor 张昇欢贺超李育高黄志毅尼尔·麦克纳顿
Owner EEGSMART TECHNPLOGY CO LTD
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