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人和生物体中的生物电流会产生微弱的磁场,例如人的心脏收缩舒张会产生约10~(-5)～10(-6)高斯的心磁场,人受到光线、声音或电等刺激时会在人脑部产生约10~(-8)～10(-9)高斯的脑磁场或称(脑)神经磁场。这些心磁场和脑磁场随时间变化的曲线称为心磁图(MCG)和脑磁图(MEG),与心电图(ECG)和脑电图(EEG)很相似。测量和研究人的心磁图、脑磁图和人体中其他部分(如肌肉、肺部等)的磁场,对于了解一些生理活动和病变机制很有帮
Bioelectrical currents in humans and organisms produce a weak magnetic field. For example, systolic and diastolic heart pressures can cause a magnetic field of about 10 -5 to 10 -6 Gauss. When stimulated by light, sound or electricity, Will produce about 10 ~ (-8) ~ 10 (-9) Gauss brain magnetic field or brain (nerve) magnetic field in human brain. The curves of these magnetic field and magnetic field over time are called the magnetocardiogram (MCG) and magnetoencephalogram (MEG), similar to the ECG and EEG. Measuring and studying the magnetic fields of human magnetocardiograms, magnetoencephalography and other parts of the human body (such as muscles, lungs, etc.) is helpful for understanding some physiological activities and pathological mechanisms