Magnetoencephalogram system based on all-optical atomic magnetic detection and obtaining method

Abstract

The invention relates to a magnetoencephalogram system based on all-optical atomic magnetic detection and an obtaining method. An all-optical atomic magnetic sensor array is arranged on a flexible head-mounted sinking bottom plane; the flexible head-mounted sinking bottom of the all-optical atomic magnetic sensor array is bent along a detected head to form a helmet shape, and at least two reference magnetic field sources are arranged at the known position of the head; reference magnetic field source signals are transmitted to a space coordinate real-time analysis module to be processed to obtain real-time space reference coordinates; meanwhile, brain magnetic field information is then transmitted to a head external magnetic field analysis module to be processed; a magnetoencephalogram synthesis module performs real-time position positioning and repeated detection information fusion, and high signal-to-noise ratio brain magnetic field distribution is obtained. The system has the advantages that the method is simple, the structure positioning requirement is low, the system is easy to realize, sensitivity is high, the real-time performance is good, the reliability is high, the needed space is small, and the flexibility is high.

Description

technical field [0001] The present invention relates to a magnetoencephalogram system and acquisition method, in particular to a magnetoencephalogram system and acquisition method based on all-optical atomic magnetic force detection, which is mainly used in brain science, life medicine, biotechnology, health detection, disease diagnosis and treatment, man-machine Magnetoencephalogram detection and acquisition in the fields of interaction, intelligent control, and behavioral organization. Background technique [0002] Magnetoencephalography (MEG for short) detection is one of the non-invasive and non-radioactive brain function image detection technologies for the human body. It plays a very important role in the fields of control and behavioral organization. Magnetoencephalography does not need direct contact with the skin, so there will be no artifacts arising from it, it can directly reflect the activity state of the magnetic field source in the brain, and can determine th...

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Problems solved by technology

[0003] In the prior art, there are magnetoencephalogram detection devices. The multinational company Elekta is a leader in magnetoencephalogram detection devices and produces the Elekta Neuromag TRIUX model magnetoencephalogram; the American Tristan company produces the MagView model magnetoencephalogram. Quantum superconducting interference devices are used, but there are still some essential deficiencies: a low-temperature refrigeration system is necessary, usually using liquid nitrogen or liquid helium refrigeration, and the system structure is complex; the detection sensitivity of the detection device is limited by the detection principle and system Construction complexity, poor flexibility for magnetoencephalogram detection; large device size, cannot be miniaturized, and high construction cost

In addition, there is another method in the prior art, see the US patent, the applicant is Sumitomo Corporation of Japan, the patent name is Magnetoencephalography meter for measuring neuromagnitism, the authorized patent number is US79113803B2, and the patent authorization date is August 25, 2017. The invention adopts the optically pumped atomic magnetic sensor to form a fixed helmet-type magnetoencephalogram instrument according to a certain orientation. This prior technology has considerable advantages, but there are some essential deficiencies. Inconvenient for magnetic field reconstruction, affecting detection performance, limited information, limited scope of application, etc.

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