Room Temperature Magnetoencephalography and MagnetocardiographyMeasurements using TMR Sensors

摘要

Measurement of bio-magnetic fields such as Magnetoencephalography (MEG) or Magnetocardiography(MCG) have great potential to improve the diagnosis of diseases and to clarify the biological functions ofliving organisms. However, such measurements requires the use of SQUIDs with high equipment andrunning costs, especially the price of liquid helium. In this study, we developed tunnel magneto-resistance(TMR) sensors that operate at room temperature to measure weak bio-magnetic fields.