According to the Science and Technology Daily, recently, the Institute of Biophysics of the Chinese Academy of Sciences developed the first prototype of a new multi-channel magnetoencephalography system based on atomic magnetometers, and successfully obtained high-quality brain magnetic signals. This is a real-time dynamic process for understanding brain function. Spatial localization and clinical application of brain diseases play an important role.
The magnetoencephalography device can detect the location and time course of neural activity by detecting the extra-cranial weak magnetic signal generated by brain nerve activity. Compared with other brain imaging techniques, magnetoencephalography can observe functional magnetic resonance imaging (fMRI). Unobtained real-time dynamic process of brain function, spatial positioning accuracy is significantly higher than EEG, and safe, non-invasive, contributing to brain science research and clinical medicine. Positioning of epilepsy, preoperative language functional area localization Other fields also play an important role.
Traditional magnetoencephalography equipment is based on superconducting quantum interferometers, which need to operate at ultra-low temperature. The cost of purchase and operation is high, and the probe position is fixed and far from the scalp. The adaptability is poor. The magnetoencephalography system based on atomic magnetometer is in recent years. New technology, can work at room temperature, the probe can be close to the scalp, with the advantages of low construction/operation cost, high sensitivity and high adaptability (can be made into a wearable system), it is expected to increase the penetration rate of the magnetoencephalography and expand to More research and clinical fields.
The Institute of Biophysics of the Chinese Academy of Sciences has successfully built a 12-channel prototype of the atomic magnetometer magnetoencephalography, including 96-channel 3D printed adjustable magnetoencephalography helmets compatible with a variety of detectors, and has successfully achieved high quality. Brain magnetic imaging signals. In some applications, the same or higher positioning accuracy can be achieved with a probe that is much smaller than a conventional superconducting quantum interferometer magnetoencephalography system. The prototype can effectively detect the hippocampus of the brain. The deep brain region, which is difficult to detect by traditional brain magnetism, such as Shangqiu, can also be effectively applied to young children whose traditional magnetoencephalography is difficult to apply. Parkinson's patients and other groups have potential application prospects in the fields of developmental psychology and brain disease diagnosis. .
