[Human's magnetoencephalography and normal value of auditory evoked magnetic field evoked by tone burst]

In magnetic shield room, 9 normal subjects were measured by magnetoencephalography (MEG) and auditory evoked magnetic field (AMF) with superconducting quantum device (SQUID). In our experiment, the magnitudes of MEG were between +100 fT and -100 fT and an AMF evoked with 1 kHz tone burst had 8 stable waves. The main waves were N2, P3, N3 with latencies 65, 118, 175 ms and magnitudes -13, +15, -12 fT. The latencies of waves showed small deviations. The magnitudes of waves were about +/- 15 fT. We also found that the two lateral records of countralateral AMFs have revert waveforms in the last two subjects.