Abstract
The potential generated in a set of concentric ring electrodes by a moving dipole layer was simulated by a linear finite element model. The wavefront was represented by rectangular charged elements with the charge concentrated at the center of each element. The model was refined to reflect the solid angle described by the corners of the finite element and the center of the element on the ring of interest. This corrects the potential while the dipole layer is near the center of the sensing electrodes. The model confirms that the far-field dependence of both bipolar and tripolar rings is a function of r-4, where r is the radius of the ring. As expected, the tripolar configuration is more spatially sensitive with a smaller amplitude. When signal amplitude is more important than spatial specificity then the bipolar configuration appears superior.
| Original language | English |
|---|---|
| Title of host publication | Proceedings of the Annual Conference on Engineering in Medicine and Biology |
| Place of Publication | Piscataway, NJ, United States |
| Publisher | Publ by IEEE |
| Pages | 612-613 |
| Number of pages | 2 |
| Edition | pt 2 |
| ISBN (Print) | 0879425598 |
| State | Published - Dec 1 1990 |
| Event | Proceedings of the 12th Annual International Conference of the IEEE Engineering in Medicine and Biology Society - Philadelphia, PA, USA Duration: Nov 1 1990 → Nov 4 1990 |
Other
| Other | Proceedings of the 12th Annual International Conference of the IEEE Engineering in Medicine and Biology Society |
|---|---|
| City | Philadelphia, PA, USA |
| Period | 11/1/90 → 11/4/90 |
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ASJC Scopus subject areas
- Bioengineering
Cite this
Optimization of multi-ring sensing electrode set. / Kaufer, Monica; Rasquinha, Leonard; Tarjan, Peter.
Proceedings of the Annual Conference on Engineering in Medicine and Biology. pt 2. ed. Piscataway, NJ, United States : Publ by IEEE, 1990. p. 612-613.Research output: Chapter in Book/Report/Conference proceeding › Conference contribution
}
TY - GEN
T1 - Optimization of multi-ring sensing electrode set
AU - Kaufer, Monica
AU - Rasquinha, Leonard
AU - Tarjan, Peter
PY - 1990/12/1
Y1 - 1990/12/1
N2 - The potential generated in a set of concentric ring electrodes by a moving dipole layer was simulated by a linear finite element model. The wavefront was represented by rectangular charged elements with the charge concentrated at the center of each element. The model was refined to reflect the solid angle described by the corners of the finite element and the center of the element on the ring of interest. This corrects the potential while the dipole layer is near the center of the sensing electrodes. The model confirms that the far-field dependence of both bipolar and tripolar rings is a function of r-4, where r is the radius of the ring. As expected, the tripolar configuration is more spatially sensitive with a smaller amplitude. When signal amplitude is more important than spatial specificity then the bipolar configuration appears superior.
AB - The potential generated in a set of concentric ring electrodes by a moving dipole layer was simulated by a linear finite element model. The wavefront was represented by rectangular charged elements with the charge concentrated at the center of each element. The model was refined to reflect the solid angle described by the corners of the finite element and the center of the element on the ring of interest. This corrects the potential while the dipole layer is near the center of the sensing electrodes. The model confirms that the far-field dependence of both bipolar and tripolar rings is a function of r-4, where r is the radius of the ring. As expected, the tripolar configuration is more spatially sensitive with a smaller amplitude. When signal amplitude is more important than spatial specificity then the bipolar configuration appears superior.
UR - http://www.scopus.com/inward/record.url?scp=0025562344&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0025562344&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0025562344
SN - 0879425598
SP - 612
EP - 613
BT - Proceedings of the Annual Conference on Engineering in Medicine and Biology
PB - Publ by IEEE
CY - Piscataway, NJ, United States
ER -