Time-frequency-analysis-based method for automatically separating peak activities in high-frequency oscillation rhythms

A high-frequency oscillation, time-frequency analysis technology, applied in medical science, diagnostic signal processing, sensors, etc., can solve problems such as time-consuming, wrong positioning results, and low-frequency frequency components are easily interfered by other signals.
CN110584598AActive Publication Date: 2019-12-20CHINA UNIV OF GEOSCIENCES (WUHAN)
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA UNIV OF GEOSCIENCES (WUHAN)
Publication Date
2019-12-20

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Abstract

The present invention discloses a time-frequency-analysis-based method for automatically separating peak activities in high-frequency oscillation rhythms. Firstly, acquiring brain electrical signals of an epileptic patient and also extracting original signals corresponding to the suspected high-frequency oscillation rhythms; then conducting peak signal detection on the original signals corresponding to the suspected high-frequency oscillation rhythms, removing the detected peak signals and obtaining the high-frequency oscillation rhythms with high precision. The detection of the peak signals uses the time-frequency-analysis-based method, a box-plot is used to obtain upper quartile and lower quartile of signal power, peak activity mixed in the high-frequency oscillation rhythms is detected,and the detection precision of the high-frequency oscillation rhythms of the epileptic brain electrical signals is improved. The present invention discloses a high-frequency oscillation rhythm detection device and a storage device and realizes the high-frequency oscillation rhythm detection method. The time-frequency-analysis-based method has the beneficial effects of improving the detection precision of the high-frequency oscillation rhythms of the epileptic brain electrical signals and helping doctors to diagnose epilepsia and remove epileptogenic focus.
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Description

technical field

[0001] The invention relates to a method for automatically separating peak activity in high-frequency oscillation rhythm based on time-frequency analysis, which belongs to the field of epilepsy EEG signal processing. Background technique

[0002] Epilepsy is a common neurological disorder characterized by spontaneity and unpredictability. During a seizure, people often show abnormalities in movement and behavior. The prevalence of epilepsy in the world is 0.5%-1%, of which it is 0.7% in my country, and it is still increasing year by year. Most epilepsy patients can be treated with antiepileptic drugs, but there are still about 30% of patients whose seizures cannot be controlled by drugs, so they are diagnosed as intractable epilepsy patients.

[0003] Refractory epilepsy refers to conventional and systematic antiepileptic drug treatment, the concentration of antiepileptic drugs in the blood remains within the effective range, but the patient's seizures cann...

Claims

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