Abstract
This study focuses on the comparison of characteristics of functional magnetic resonance imaging (fMRI) and magnetoencepalography (MEG). Activations of the primary somatosensory cortex were investigated using MEG and fMRI. A right thumb and a ring finger were Stimulated by the electrical current pulse. Both MEG and fMRI identified expected anatomical regions of primary somatosensory cortex. When the thumb and the ring finger were stimulated simultaneously, it was possible in fMRI to discriminate the area of the thumb and the ring finger in the primary somatosensory cortex. In MEG, a single current dipole model might fit with a sufficiently large correlation coefficient because two sources are closely located within 10mm. It is difficult to discriminate two closely located dipoles, if no initial information is given.
| Original language | English |
|---|---|
| Pages (from-to) | 4260-4262 |
| Number of pages | 3 |
| Journal | IEEE Transactions on Magnetics |
| Volume | 33 |
| Issue number | 5 PART 2 |
| DOIs | |
| Publication status | Published - Dec 1 1997 |
| Externally published | Yes |
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All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Electrical and Electronic Engineering
Cite this
Measurement of somatosensory evoked response using functional MR images and MEG. / Iramina, Keiji; Yumoto, Masato; Yoshikawa, Kohki; Kamei, Hirotake; Ueno, Shoogo.
In: IEEE Transactions on Magnetics, Vol. 33, No. 5 PART 2, 01.12.1997, p. 4260-4262.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Measurement of somatosensory evoked response using functional MR images and MEG
AU - Iramina, Keiji
AU - Yumoto, Masato
AU - Yoshikawa, Kohki
AU - Kamei, Hirotake
AU - Ueno, Shoogo
PY - 1997/12/1
Y1 - 1997/12/1
N2 - This study focuses on the comparison of characteristics of functional magnetic resonance imaging (fMRI) and magnetoencepalography (MEG). Activations of the primary somatosensory cortex were investigated using MEG and fMRI. A right thumb and a ring finger were Stimulated by the electrical current pulse. Both MEG and fMRI identified expected anatomical regions of primary somatosensory cortex. When the thumb and the ring finger were stimulated simultaneously, it was possible in fMRI to discriminate the area of the thumb and the ring finger in the primary somatosensory cortex. In MEG, a single current dipole model might fit with a sufficiently large correlation coefficient because two sources are closely located within 10mm. It is difficult to discriminate two closely located dipoles, if no initial information is given.
AB - This study focuses on the comparison of characteristics of functional magnetic resonance imaging (fMRI) and magnetoencepalography (MEG). Activations of the primary somatosensory cortex were investigated using MEG and fMRI. A right thumb and a ring finger were Stimulated by the electrical current pulse. Both MEG and fMRI identified expected anatomical regions of primary somatosensory cortex. When the thumb and the ring finger were stimulated simultaneously, it was possible in fMRI to discriminate the area of the thumb and the ring finger in the primary somatosensory cortex. In MEG, a single current dipole model might fit with a sufficiently large correlation coefficient because two sources are closely located within 10mm. It is difficult to discriminate two closely located dipoles, if no initial information is given.
UR - http://www.scopus.com/inward/record.url?scp=0031221770&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0031221770&partnerID=8YFLogxK
U2 - 10.1109/20.619729
DO - 10.1109/20.619729
M3 - Article
AN - SCOPUS:0031221770
VL - 33
SP - 4260
EP - 4262
JO - IEEE Transactions on Magnetics
JF - IEEE Transactions on Magnetics
SN - 0018-9464
IS - 5 PART 2
ER -