Calculating the Current Density and Electric Field in Human Head by Multichannel Transcranial Magnetic Stimulation
Journal article, 2009

In this paper, we present a designed multichannel transcranial magnetic stimulation (mTMS) system with 40 small coils. The induced current density and electric field in realistic human head model by mTMS were calculated by impedance method and the results were compared with figure-of-eight coil. The dependence of stimulation focality on the coil current direction was investigated. Properly adjusting the input current phases can improve the magnitude of the induced fields in the brain.


impedance method

human motor cortex


Current density


electric field


transcranial magnetic stimulation (mTMS)


M. Lu

Faculdade de Ciencias, Universidade de Lisboa

S. Ueno

Kyushu University

T. Thorlin

Sahlgrenska University Hospital

Mikael Persson

Chalmers, Signals and Systems, Signalbehandling och medicinsk teknik, Biomedical Electromagnetics

IEEE Transactions on Magnetics

0018-9464 (ISSN)

Vol. 45 3 1662-1665

Subject Categories

Electrical Engineering, Electronic Engineering, Information Engineering



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