Abstract
As part of our studies on localization of epileptic foci, dipole analysis using averaged spikes were compared with that using individual spikes for 25 patients with localization related epilepsy. Our results are as follows. 1) In the group which showed stable dipoles from individual spikes, dipole localization from averaged and individual spikes were similar, although the former showed a higher dipolarity and more stable location, for the entire spike discharge including the peak, trough and wave. The high dipolarity was due to improved signal to noise ratio obtained from averaging. 2) The cases with centrotemporal spike focus including benign childhood epilepsy with centrotemporal spikes showed more reliable dipoles. In the cases with frontal lobe epilepsy, reliable dipoles were rarely obtained even with averaged spikes. Each method provided independent information, so they are of complementary value.
| Original language | English |
|---|---|
| Pages (from-to) | 131-135 |
| Number of pages | 5 |
| Journal | Brain Topography |
| Volume | 6 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Dec 1993 |
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Keywords
- Benign focal epilepsy
- Dipolarity
- Dipole stability
- Dipole tracing method
- Epilepsy
- Spike averaging
ASJC Scopus subject areas
- Neuroscience(all)
- Clinical Neurology
Cite this
Clinical application of spike averaging to dipole tracing method. / Yoshinaga, Harumi; Kobayashi, Katsuhiro; Sato, Masahiro; Mizukawa, Michiko; Ohtahara, Shunsuke.
In: Brain Topography, Vol. 6, No. 2, 12.1993, p. 131-135.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Clinical application of spike averaging to dipole tracing method
AU - Yoshinaga, Harumi
AU - Kobayashi, Katsuhiro
AU - Sato, Masahiro
AU - Mizukawa, Michiko
AU - Ohtahara, Shunsuke
PY - 1993/12
Y1 - 1993/12
N2 - As part of our studies on localization of epileptic foci, dipole analysis using averaged spikes were compared with that using individual spikes for 25 patients with localization related epilepsy. Our results are as follows. 1) In the group which showed stable dipoles from individual spikes, dipole localization from averaged and individual spikes were similar, although the former showed a higher dipolarity and more stable location, for the entire spike discharge including the peak, trough and wave. The high dipolarity was due to improved signal to noise ratio obtained from averaging. 2) The cases with centrotemporal spike focus including benign childhood epilepsy with centrotemporal spikes showed more reliable dipoles. In the cases with frontal lobe epilepsy, reliable dipoles were rarely obtained even with averaged spikes. Each method provided independent information, so they are of complementary value.
AB - As part of our studies on localization of epileptic foci, dipole analysis using averaged spikes were compared with that using individual spikes for 25 patients with localization related epilepsy. Our results are as follows. 1) In the group which showed stable dipoles from individual spikes, dipole localization from averaged and individual spikes were similar, although the former showed a higher dipolarity and more stable location, for the entire spike discharge including the peak, trough and wave. The high dipolarity was due to improved signal to noise ratio obtained from averaging. 2) The cases with centrotemporal spike focus including benign childhood epilepsy with centrotemporal spikes showed more reliable dipoles. In the cases with frontal lobe epilepsy, reliable dipoles were rarely obtained even with averaged spikes. Each method provided independent information, so they are of complementary value.
KW - Benign focal epilepsy
KW - Dipolarity
KW - Dipole stability
KW - Dipole tracing method
KW - Epilepsy
KW - Spike averaging
UR - http://www.scopus.com/inward/record.url?scp=0027732511&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027732511&partnerID=8YFLogxK
U2 - 10.1007/BF01191078
DO - 10.1007/BF01191078
M3 - Article
VL - 6
SP - 131
EP - 135
JO - Brain Topography
JF - Brain Topography
SN - 0896-0267
IS - 2
ER -