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.
brain
tissues
electric field
Current density
impedance method
coils
multichannel
transcranial magnetic stimulation (mTMS)
human motor cortex
Author
M. Lu
Faculdade de Ciencias, Universidade de Lisboa
S. Ueno
Kyushu University
T. Thorlin
Sahlgrenska Universitetssjukhuset
Mikael Persson
Chalmers, Signals and Systems, Signalbehandling och medicinsk teknik
IEEE Transactions on Magnetics
0018-9464 (ISSN)
Vol. 45 3 1662-1665Subject Categories (SSIF 2011)
Electrical Engineering, Electronic Engineering, Information Engineering
DOI
10.1109/TMAG.2009.2012770