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Updated: Jul 19, 2026

High-density Electroencephalographic Acquisition in a Rodent Model Using Low-cost and Open-source Resources
Published on: November 26, 2016
Pseudo current density maps of electrophysiological heart, nerve or brain function and their physical basis
Wolfgang Haberkorn1, Uwe Steinhoff, Martin Burghoff
1Physikalisch-Technische Bundesanstalt, Berlin, Germany. wolfgang.haberkorn@ptb.de
Background:
In recent years the visualization of biomagnetic measurement data by so-called pseudo current density maps or Hosaka-Cohen (HC) transformations became popular.
Methods:
The physical basis of these intuitive maps is clarified by means of analytically solvable problems.
Results:
Examples in magnetocardiography, magnetoencephalography and magnetoneurography demonstrate the usefulness of this method.
Conclusion:
Hardware realizations of the HC-transformation and some similar transformations are discussed which could advantageously support cross-platform comparability of biomagnetic measurements.
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