Biomagnetic signals
Biomagnetic Signals
Different organs, including the heart, brain, and lungs, also generate weak magnetic fields that can be measured with magnetic sensors. Typically, the strength of the magnetic field is much weaker than the corresponding physiological bioelectric signals. Biomagnetism is the measurement of the magnetic signals that are associated with specific physiological activity and that are typically linked to an accompanying electric field from a specific tissue or organ. With the aid of very precise magnetic sensors or SQUID magnetometers (superconducting quantum interference device) it is possible to directly monitor magnetic activity from the brain (magnetoencephalography, MEG), peripheral nerves (magnetoneurography, MNG), gastrointestinal tract (magnetogastrography, MGG), and the heart (magnetocardiography, MCG).
Related pages:
- Biosignals
- Bioelectric signals
- Biochemical signals
- Biomechanical signals
- Bioacoustic signals
- Biooptical signals
