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fNIRS-based decoding method for imaginary object displacement direction

A technology of object displacement and decoding method, which is applied in the fields of medical science, diagnosis, diagnostic recording/measurement, etc., can solve the problem of inability to effectively decode and identify the displacement direction of external objects, and achieve the effect of improving adaptability and flexibility

Inactive Publication Date: 2021-06-25
SUZHOU UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] For this reason, the technical problem to be solved by the present invention is to overcome the problem that in the prior art, based on the FNIRS motor imagery decoding method, it is impossible to effectively decode and identify the displacement direction of external objects under direct continuous motion imagery

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  • fNIRS-based decoding method for imaginary object displacement direction
  • fNIRS-based decoding method for imaginary object displacement direction
  • fNIRS-based decoding method for imaginary object displacement direction

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Embodiment Construction

[0033] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

[0034] refer to figure 1 As shown, this embodiment discloses a method for decoding the displacement direction of an imaginary object based on fNIRS, comprising the following steps:

[0035] S1) Collect the hemoglobin information in the brain of the subject when the subject is performing the object displacement imagination test;

[0036] Among them, the subjects directly and continuously imagine the displacement of external objects during the object displacement imagination test.

[0037] S2) Preprocessing the collected hemoglobin information to remove the interference of irrelevant information in the hemoglobin information, thereby retaining the key physiological information freq...

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Abstract

The invention relates to a fNIRS-based decoding method for an imaginary object displacement direction. The fNIRS-based decoding method comprises the following steps: collecting hemoglobin information in a brain when a subject performs an object displacement imaginary test; preprocessing the collected hemoglobin information; calculating recognition features according to the preprocessed hemoglobin information; using an information value sorting method and an adaptive genetic algorithm to screen recognition features; and performing recognition processing on the screened recognition features by using a machine learning method to identify the displacement direction of the object, thereby completing continuous decoding of the imaginary state of the displacement of the object. According to the invention, continuous online recognition can be carried out on the displacement direction of the external object under direct continuous imagination, and the adaptability and flexibility of the motor imagery method to a complex and changeable external environment are improved.

Description

technical field [0001] The invention relates to the technical field of information processing, in particular to a fNIRS-based decoding method for the displacement direction of an imaginary object. Background technique [0002] Motor imagery is a commonly used EEG research paradigm. Its physiological basis is that the movement of human limbs will trigger the energy changes of motor rhythm in the sensorimotor area of ​​the brain. This phenomenon will not only appear in the actual movement, but also in the process of imagining movement , subjects with normal development of motor function will also have this kind of phenomenon. Motor imagination is divided into first-person, third-person and kinesthetic imagination. No matter what kind of motor imagination, it is necessary to fully concentrate and imagine the corresponding motion effects. Motor imagination exercises people's attention and stimulates brain movement-related areas. Activation plays an important role. The motor im...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/1455
CPCA61B5/14553A61B5/14542A61B5/725
Inventor 李春光朱悦孙立宁曲巍
Owner SUZHOU UNIV