Biomagnetic instrumentation

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Abstract
We present a review of recent developments of the instrumentation for measuringmagnetic fields emanating from the human body and other biological systems. The techniques for using various types of field sensors in shielded and unshielded environments are described, with special attention paid to recent advances in the application of SQUID systems. We also outline the present technical frontiers and point to avenues along which further improvements in performance are desirable.