[Fetal magnetoencephalography I: 1st prenatal registration of auditory evoked neuromagnetic fields].

Using a SQUID gradiometer of the second order, we succeeded in recording a prenatal auditory evoked neuromagnetic field in the 35th week of pregnancy. After sonographic localization of a suitable recording site on the fetal skull, the neuromagnetic field was recorded above the mother's abdomen. It will be necessary to develop special gradiometer configurations for further prenatal registrations of the stimulus-related and spontaneous fetal brain activity.