Abstract
In this study, we investigate the relationships between the eddy current density and the coil configuration of transcranial magnetic stimulation (TMS). The aim of this study is to determine the coil parameters such as the radius of the coil and the bending angle of the coil to stimulate specified area such as the dorsolateral prefrontal cortex (DLPFC). We used a realistic 3-D human head model with inhomogeneous conductivity to obtain accurate eddy current distributions. In the TMS model, eddy current distributions were obtained for figure-eight coils with radius of 30, 40 and 50 mm, and a bending angle of the coil changed from 0 to 30 degrees. Computer simulations show that the maximum value of the eddy current increases linearly with the increase of the radius and the bending-angle of the coil. The maximum eddy current density was 87.6 A/m2 under the case where the bending-angle was 30 degrees and the radius was 50 mm. The stimulated area increased with the increase of the radius and bending-angle of the coil. It is possible to determine coil parameters to stimulate target area appropriately.
| Original language | English |
|---|---|
| Article number | 5257005 |
| Pages (from-to) | 4845-4848 |
| Number of pages | 4 |
| Journal | IEEE Transactions on Magnetics |
| Volume | 45 |
| Issue number | 10 |
| DOIs | |
| Publication status | Published - Oct 2009 |
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Keywords
- Coil parameter
- Eddy current
- Eight figure coil
- Transcranial magnetic sxtimulation (TMS)
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Electronic, Optical and Magnetic Materials
Cite this
Effects of coil parameters on the stimulated area by transcranial magnetic stimulation. / Tsuyama, Seichi; Katayama, Yoshinori; Hyodo, Akira; Hayami, Takehito; Ueno, Shoogo; Iramina, Keiji.
In: IEEE Transactions on Magnetics, Vol. 45, No. 10, 5257005, 10.2009, p. 4845-4848.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Effects of coil parameters on the stimulated area by transcranial magnetic stimulation
AU - Tsuyama, Seichi
AU - Katayama, Yoshinori
AU - Hyodo, Akira
AU - Hayami, Takehito
AU - Ueno, Shoogo
AU - Iramina, Keiji
PY - 2009/10
Y1 - 2009/10
N2 - In this study, we investigate the relationships between the eddy current density and the coil configuration of transcranial magnetic stimulation (TMS). The aim of this study is to determine the coil parameters such as the radius of the coil and the bending angle of the coil to stimulate specified area such as the dorsolateral prefrontal cortex (DLPFC). We used a realistic 3-D human head model with inhomogeneous conductivity to obtain accurate eddy current distributions. In the TMS model, eddy current distributions were obtained for figure-eight coils with radius of 30, 40 and 50 mm, and a bending angle of the coil changed from 0 to 30 degrees. Computer simulations show that the maximum value of the eddy current increases linearly with the increase of the radius and the bending-angle of the coil. The maximum eddy current density was 87.6 A/m2 under the case where the bending-angle was 30 degrees and the radius was 50 mm. The stimulated area increased with the increase of the radius and bending-angle of the coil. It is possible to determine coil parameters to stimulate target area appropriately.
AB - In this study, we investigate the relationships between the eddy current density and the coil configuration of transcranial magnetic stimulation (TMS). The aim of this study is to determine the coil parameters such as the radius of the coil and the bending angle of the coil to stimulate specified area such as the dorsolateral prefrontal cortex (DLPFC). We used a realistic 3-D human head model with inhomogeneous conductivity to obtain accurate eddy current distributions. In the TMS model, eddy current distributions were obtained for figure-eight coils with radius of 30, 40 and 50 mm, and a bending angle of the coil changed from 0 to 30 degrees. Computer simulations show that the maximum value of the eddy current increases linearly with the increase of the radius and the bending-angle of the coil. The maximum eddy current density was 87.6 A/m2 under the case where the bending-angle was 30 degrees and the radius was 50 mm. The stimulated area increased with the increase of the radius and bending-angle of the coil. It is possible to determine coil parameters to stimulate target area appropriately.
KW - Coil parameter
KW - Eddy current
KW - Eight figure coil
KW - Transcranial magnetic sxtimulation (TMS)
UR - http://www.scopus.com/inward/record.url?scp=70350599669&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=70350599669&partnerID=8YFLogxK
U2 - 10.1109/TMAG.2009.2023619
DO - 10.1109/TMAG.2009.2023619
M3 - Article
VL - 45
SP - 4845
EP - 4848
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
SN - 0018-9464
IS - 10
M1 - 5257005
ER -