Abstract
Different cortical potential imaging methods have been developed to directly link the scalp potentials with the cortical potentials. These methods make it possible to non-invasively investigate cortical activities with high spatial and time resolutions by using scalp EEC. However, although there are many different cortical potential imaging methods available, up to now, the accuracy and efficiency of these methods have not been rigorously evaluated nor compared. In this paper, we investigated a total of five different methods using ten different scenarios that employ simulated scalp EEG data with or without noise. Our results showed that 1), when only the center of electrical cortical activity needs to be estimated, single moving dipole and single dipole deviation scan methods are more accurate and more efficient than current density methods; and 2), with respect to current density methods, which are useful when the number of sources are unknown, the LORETA method with the L1-norm gives the highest accuracy, however, at a significant computational cost.
| Original language | English (US) |
|---|---|
| Pages (from-to) | 2128-2131 |
| Number of pages | 4 |
| Journal | Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings |
| Volume | 3 |
| State | Published - Dec 1 2003 |
| Event | A New Beginning for Human Health: Proceedings of the 25th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Cancun, Mexico Duration: Sep 17 2003 → Sep 21 2003 |
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Keywords
- Cortical potential imaging
- Current density
- Dipole scan
- Moving dipole
- Source localization methods
ASJC Scopus subject areas
- Signal Processing
- Biomedical Engineering
- Computer Vision and Pattern Recognition
- Health Informatics
Cite this
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Evaluation of Different Cortical Potential Imaging Methods Using Simulated EEG Data. / Yao, Jun; Dewald, Jules.
In: Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings, Vol. 3, 01.12.2003, p. 2128-2131.Research output: Contribution to journal › Conference article
TY - JOUR
T1 - Evaluation of Different Cortical Potential Imaging Methods Using Simulated EEG Data
AU - Yao, Jun
AU - Dewald, Jules
PY - 2003/12/1
Y1 - 2003/12/1
N2 - Different cortical potential imaging methods have been developed to directly link the scalp potentials with the cortical potentials. These methods make it possible to non-invasively investigate cortical activities with high spatial and time resolutions by using scalp EEC. However, although there are many different cortical potential imaging methods available, up to now, the accuracy and efficiency of these methods have not been rigorously evaluated nor compared. In this paper, we investigated a total of five different methods using ten different scenarios that employ simulated scalp EEG data with or without noise. Our results showed that 1), when only the center of electrical cortical activity needs to be estimated, single moving dipole and single dipole deviation scan methods are more accurate and more efficient than current density methods; and 2), with respect to current density methods, which are useful when the number of sources are unknown, the LORETA method with the L1-norm gives the highest accuracy, however, at a significant computational cost.
AB - Different cortical potential imaging methods have been developed to directly link the scalp potentials with the cortical potentials. These methods make it possible to non-invasively investigate cortical activities with high spatial and time resolutions by using scalp EEC. However, although there are many different cortical potential imaging methods available, up to now, the accuracy and efficiency of these methods have not been rigorously evaluated nor compared. In this paper, we investigated a total of five different methods using ten different scenarios that employ simulated scalp EEG data with or without noise. Our results showed that 1), when only the center of electrical cortical activity needs to be estimated, single moving dipole and single dipole deviation scan methods are more accurate and more efficient than current density methods; and 2), with respect to current density methods, which are useful when the number of sources are unknown, the LORETA method with the L1-norm gives the highest accuracy, however, at a significant computational cost.
KW - Cortical potential imaging
KW - Current density
KW - Dipole scan
KW - Moving dipole
KW - Source localization methods
UR - http://www.scopus.com/inward/record.url?scp=1542331387&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=1542331387&partnerID=8YFLogxK
M3 - Conference article
AN - SCOPUS:1542331387
VL - 3
SP - 2128
EP - 2131
JO - Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
JF - Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
SN - 1557-170X
ER -