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Method for rapidly screening out drug addicts by means of electroencephalogram features and pupil dynamic change features

A screening and personnel technology, applied in the fields of application, eye testing equipment, medical science, etc., can solve problems such as methods and measurement standards for screening drug addicts that are not clearly specified, so as to reduce complicated operations and waiting time, and achieve good results The effect of economic efficiency, good accuracy and practicality

Inactive Publication Date: 2015-05-06
KUNMING INST OF ZOOLOGY CHINESE ACAD OF SCI
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  • Application Information

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Problems solved by technology

However, this method must obtain the normal pupil size of the suspect in the non-drug state in advance
When the grassroots police are dispatched to carry out anti-drug operations, they do not have the conditions to obtain the normal pupil size of the suspect who is not taking drugs. Therefore, it is difficult to use this method on the suspect who is checked for the first time during the anti-drug operation.
Moreover, although the patent pointed out that the method can also obtain the data of pupil dynamic changes before and after light stimulation, it did not clearly point out the method and measurement standard for screening drug addicts by using the pupil dynamic changes before and after light stimulation

Method used

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  • Method for rapidly screening out drug addicts by means of electroencephalogram features and pupil dynamic change features
  • Method for rapidly screening out drug addicts by means of electroencephalogram features and pupil dynamic change features
  • Method for rapidly screening out drug addicts by means of electroencephalogram features and pupil dynamic change features

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Embodiment

[0035] Number the drug addict as the subject to be tested, and make the subject wear the brain electrode cap with the above-mentioned EEG collection part, so as to stick the scalp electrodes of the multi-conductor EEG instrument with scalp electrodes on the head, and the subject to be tested The eyes are brought close to a camera that acts as a pupil image collector. The light in both eyes was cut off. After adapting to the dark environment for half a minute, a uniform white light was given for 2 seconds, and then the light was removed and maintained for 2 seconds. The testee kept his eyes closed or open during a complete test according to the requirements of the tester until 2 seconds after the light was removed. The interval between eye closing and eye opening is repeated three times respectively, and the detection ends. The collected signal is displayed on the terminal display screen after being calculated by a computer connected to the camera, light source and multiconduc...

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Abstract

Disclosed is a detection method for rapidly screening out drug addicts. The method can rapidly screen out drug addicts independently or jointly according to electroencephalogram features and pupil dynamic change features of people to be detected responding to illumination and light offset. The detection method for rapidly screening out the drug addicts is easy and convenient to operate, the obtained result is rapid and accurate, and the method has the good accuracy and practicability.

Description

technical field [0001] The invention relates to a detection method for quickly screening drug addicts according to the electroencephalogram characteristics and pupil dynamic change characteristics of the detected person. Background technique [0002] Rapid screening of drug suspects is one of the important contents of social anti-drug work. At present, the screening of drug suspects in my country is mainly based on the results of biochemical analysis of the tested person's urine or blood. Traditional urine test strips are easy to use and highly targeted, but they are expensive, have a short shelf life, cannot detect multiple (more than two) drugs, are not environmentally friendly, and are easily disturbed by diet and drugs. The problem. When extracting the tested body fluid sample, urine sample or blood sample, the accuracy of the operation is high, and technical personnel need to be specially trained. Moreover, due to the high proportion of drug addicts carrying various ...

Claims

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Application Information

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IPC IPC(8): A61B5/0476A61B3/11
CPCA61B3/11A61B5/378A61B3/112
Inventor 陈南晖
Owner KUNMING INST OF ZOOLOGY CHINESE ACAD OF SCI
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