A method and system for assessing concentration state grades based on EEG
A state level and EEG technology, applied in the research field of concentration detection of EEG analysis, can solve the problem of not considering the left and right EEG signals at the same time, not being able to reflect the level of concentration well, and it is difficult to reflect the correlation between left and right brain signals in the state of concentration and other issues to achieve the effect of strong consistency of changes
Active Publication Date: 2022-06-03
BEIJING JIAOTONG UNIV
View PDF18 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the prior art, most users use a single acquisition channel to collect EEG signals, perform data processing, feature extraction, and then calculate the concentration of the subjects. At present, various optimization algorithms are mainly used for concentration analysis and combined with concentration for a series of Evaluation, development of various applications, and focus analysis do not take into account the changes in the left and right EEG signals at the same time. It is difficult to reflect the correlation between the changes in the left and right brain signals in the state of focus. The current concentration measurement only gives specific numbers to reflect the degree of focus, not Can well reflect the level of specific concentration
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0039] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, but not to be construed as a limitation of the present invention.
[0040] It will be understood by those skilled in the art that the singular forms "a", "an", "the" and "the" as used herein can include the plural forms as well, unless expressly stated otherwise. It should be further understood that the word "comprising" used in the description of the present invention refers to the presence of stated features, integers, steps, operations, elements and / or components, but does not exclude the presence or addition of one or more other features, Integers, steps...
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
Login to View More Abstract
The present invention provides a method and system for evaluating the level of concentration state based on EEG, which collects the EEG signals in the concentration state of the subject; processes the left and right EEG signals to obtain a plurality of emotional information frequency bands, and the emotional information Frequency band feature extraction to obtain multiple corresponding rhythm features; calculate concentration based on rhythm features, and calculate coherence of left and right EEG signals based on processed left and right EEG signals; based on concentration and left and right EEG signals The coherence of the electrical signal is used to obtain the evaluation index of the focus level. The method and system provided by the present invention use two-channel data to calculate concentration and visualize the results in real time, and compress the rating index between 0 and 1. The closer to 1, the stronger the consistency of left and right EEG changes. That is, the concentration state is more serious, and the concentration level is also displayed on the display module at the same time as the concentration degree. The present invention quantifies the concentration state in detail, and can reflect the concentration degree more directly and objectively.
Description
technical field [0001] The invention relates to the technical field of concentration detection and research of EEG analysis, in particular to an EEG-based concentration state level assessment method and system. Background technique [0002] EEG is an objective and quantitative response to various changes in the brain. It is widely used in the basic theoretical research of current brain science. Different signals are the external manifestations of different emotions and psychological changes. There are many factors that affect concentration. It is necessary to conduct quantitative analysis and real-time visualization of concentration for groups such as students and athletes that require high concentration. Studies have shown that when people conduct thinking activities, corresponding electrical signals will be generated in the brain. Emotion-related states can be obtained by extracting the rhythm features of EEG signals and using specific algorithms. It is related that there ...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More Patent Type & Authority Patents(China)
IPC IPC(8): A61B5/369A61B5/374
CPCA61B5/725
Inventor 李解放徐建军
Owner BEIJING JIAOTONG UNIV