EEG dipole modeling in complex partial epilepsy.
paper
Cited
Public
Unavailable
- Authors
- Ebersole, J S
- Year
- 1991
- Journal
- Brain topography
- PMID
- 1793685
- DOI
- 10.1007/BF01132768
Visual inspection and qualitative impressions of clinical EEG abnormalities are being replaced by quantitative characterization of scalp voltage fields and dipole modeling of underlying cerebral sources. Three approaches have been used in the analysis of focal spikes of complex partial epilepsy. 1) Instantaneous, single dipole, inverse solutions for the voltage topography of the spike peak have revealed two distinct equivalent dipole configurations in the brain lobe beneath the negative extreme-radial and oblique (mixed radial and tangential). Only radial dipoles have been found for frontal and fronto-central spikes, while either type have been found for temporal and occipital spike foci. 2) Dipole stability can be assessed by an inspection of sequential instantaneous solutions encompassing the spike complex or by calculating the standard deviation of dipole location (x,y,z) and orientation (elevation, azimuth) parameters during this period. Two-thirds of spike dipoles of the radial type and essentially all of the oblique equivalent dipoles were found to be stable, whereas one-third of the radial dipoles were unstable in position or orientation. 3) Spatio-temporal analysis can identify multiple underlying sources and their potentials. Modeling separate radial and tangential dipoles over the course of the spike has revealed a composite character for spike fields with oblique dipoles and often has defined leads or lags in activity that suggested propagation between infero-mesial and lateral temporal cortex. Correlations with clinical and intracranial EEG data suggest that patients with mesial temporal sclerosis have spikes with oblique and stable equivalent dipoles; patients with discrete cortical lesions have spikes with radial and stable dipoles; patients with extensive or multi-focal cortical insults have spikes with radial and unstable dipoles.
No figures extracted from this document.
No chunks โ full text not yet ingested.
No entities extracted from this document yet.
No uploaded files.
Not in any collection.
No citations found.
In this knowledge base
| Title | Year | PMID |
|---|---|---|
| Advances in Electrophysiological Research. | 2015 | 26259089 |
External
| Title | Authors | Journal | Year | Link |
|---|---|---|---|---|
| Role of specific interictal and ictal EEG onset patterns. | Baumgartner C et al. | โ | 2025 | โ |
| Electroencephalography source localization. | Eom TH | โ | 2023 | โ |
| Semiology, EEG, and neuroimaging findings in temporal lobe epilepsies. | Frazzini V et al. | โ | 2022 | โ |
| Imaging of focal seizures with Electrical Impedance Tomography and depth electrodes in real time. | Witkowska-Wrobel A et al. | โ | 2021 | โ |
| Quantitative EEG biomarkers for epilepsy and their relation to chemical biomarkers. | Hรถller Y et al. | โ | 2021 | โ |
| Electrophysiological Source Imaging: A Noninvasive Window to Brain Dynamics. | He B et al. | โ | 2018 | โ |
| Epileptiform discharge propagation: Analyzing spikes from the onset to the peak. | Mฤlรฎia MD et al. | โ | 2016 | โ |
| Multimodal investigation of epileptic networks: The case of insular cortex epilepsy. | Zerouali Y et al. | โ | 2016 | โ |
| Advances in Electrophysiological Research. | Kamarajan C et al. | โ | 2015 | โ |
| EEG Source Imaging in Partial Epilepsy in Comparison with Presurgical Evaluation and Magnetoencephalography. | Park CJ et al. | โ | 2015 | โ |
| Voxel-based dipole orientation constraints for distributed current estimation. | Hyde DE et al. | โ | 2014 | โ |
| Computational representation of a realistic head and brain volume conductor model: electroencephalography simulation and visualization study. | Kybartaite A | โ | 2012 | โ |
| Imag(in)ing seizure propagation: MEG-guided interpretation of epileptic activity from a deep source. | Wang ZI et al. | โ | 2012 | โ |
| Mesial temporal lobe epilepsy. | Tatum WO | โ | 2012 | โ |
| Source connectivity analysis from MEG and its application to epilepsy source localization. | Dai Y et al. | โ | 2012 | โ |
| Current dipole orientation and distribution of epileptiform activity correlates with cortical thinning in left mesiotemporal epilepsy. | Reinsberger C et al. | โ | 2010 | โ |
| Decrease in propagation of interictal epileptiform activity after introduction of levetiracetam visualized with electric source imaging. | Larsson PG et al. | โ | 2010 | โ |
| EEG dipole source localization of interictal spikes in non-lesional TLE with and without hippocampal sclerosis. | Oliva M et al. | โ | 2010 | โ |
| Advances in spike localization with EEG dipole modeling. | Rose S et al. | โ | 2009 | โ |
| Clinical application of dipole models in the localization of epileptiform activity. | Ebersole JS et al. | โ | 2007 | โ |
| EEG dipole characteristics in Panayiotopoulos syndrome. | Yoshinaga H et al. | โ | 2006 | โ |
| EEG source imaging in pediatric epilepsy surgery: a new perspective in presurgical workup. | Sperli F et al. | โ | 2006 | โ |
| Propagation of interictal discharges in temporal lobe epilepsy: correlation of spatiotemporal mapping with intracranial foramen ovale electrode recordings. | Zumsteg D et al. | โ | 2006 | โ |
| 3-dimensional brain source imaging by means of laplacian weighted minimum norm estimate in a realistic geometry head model. | Ding L et al. | โ | 2005 | โ |
| Combined MEG/EEG analysis of the interictal spike complex in mesial temporal lobe epilepsy. | Pataraia E et al. | โ | 2005 | โ |
| Toward the substitution of invasive electroencephalography in epilepsy surgery. | Papanicolaou AC et al. | โ | 2005 | โ |
| Controversies in clinical neurophysiology. MEG is superior to EEG in the localization of interictal epileptiform activity: Con. | Baumgartner C | โ | 2004 | โ |
| Electric source imaging in temporal lobe epilepsy. | Gavaret M et al. | โ | 2004 | โ |
| High-resolution source imaging in mesiotemporal lobe epilepsy: a comparison between MEG and simultaneous EEG. | Leijten FS et al. | โ | 2003 | โ |
| MEG and EEG in epilepsy. | Barkley GL et al. | โ | 2003 | โ |
| Propagation of interictal epileptiform activity can lead to erroneous source localizations: a 128-channel EEG mapping study. | Lantz G et al. | โ | 2003 | โ |
| Artifact correction of the ongoing EEG using spatial filters based on artifact and brain signal topographies. | Ille N et al. | โ | 2002 | โ |
| Epileptic spikes: magnetoencephalography versus simultaneous electrocorticography. | Oishi M et al. | โ | 2002 | โ |
| Ictal source localization in presurgical patients with refractory epilepsy. | Boon P et al. | โ | 2002 | โ |
| Improving lesion conductivity estimate by means of EEG source localization sensitivity to model parameter. | Vatta F et al. | โ | 2002 | โ |
| Noninvasive localization of electromagnetic epileptic activity. II. Demonstration of sublobar accuracy in patients with simultaneous surface and depth recordings. | Lantz G et al. | โ | 2001 | โ |
| Noninvasive localization of electromagnetic epileptic activity. I. Method descriptions and simulations. | Grave de Peralta Menendez R et al. | โ | 2001 | โ |
| Dipole-source analysis in a realistic head model in patients with focal epilepsy. | Herrendorf G et al. | โ | 2000 | โ |
| Dipole source localization of interictal epileptiform activity in temporal lobe epilepsy with medial temporal lesion. | Mine S et al. | โ | 2000 | โ |
| Localization of the epileptic focus by low-resolution electromagnetic tomography in patients with a lesion demonstrated by MRI. | Worrell GA et al. | โ | 2000 | โ |
| Methods for robust clustering of epileptic EEG spikes. | Wahlberg P et al. | โ | 2000 | โ |
| Noninvasive localization of epileptogenic foci by EEG source modeling. | Ebersole JS | โ | 2000 | โ |
| [Guidelines for recording/analyzing quantitative EEG and evoked potentials. Part II: Clinical aspects]. | Luccas FJ et al. | โ | 1999 | โ |
| Long-term inpatient audiovisual scalp EEG monitoring. | Thompson JL et al. | โ | 1999 | โ |
| Reliability of dipole models of epileptic spikes. | Merlet I et al. | โ | 1999 | โ |
| Simplified projection of EEG dipole sources onto human brain anatomy. | Merlet I et al. | โ | 1999 | โ |
| Source analysis of lesional frontal-lobe epilepsy. | Ossenblok P et al. | โ | 1999 | โ |
| Spatiotemporal EEG analysis and distributed source estimation in presurgical epilepsy evaluation. | Michel CM et al. | โ | 1999 | โ |
| Accuracy of electroencephalographic dipole localization of epileptiform activities associated with focal brain lesions. | Krings T et al. | โ | 1998 | โ |
| Categorization of interictal epileptiform potentials using a graph-theoretic method. | Lantz G et al. | โ | 1998 | โ |
| Clinical usefulness of the dipole tracing method for localizing interictal spikes in partial epilepsy. | Shindo K et al. | โ | 1998 | โ |
| Dipole source localization of ictal epileptiform activity. | Mine S et al. | โ | 1998 | โ |
| Localisation of epileptic foci with electric, magnetic and combined electromagnetic models. | Diekmann V et al. | โ | 1998 | โ |
| New developments. | Wong PK et al. | โ | 1998 | โ |
| Non-invasive epileptic focus localization using EEG-triggered functional MRI and electromagnetic tomography. | Seeck M et al. | โ | 1998 | โ |
| Source localization determined by magnetoencephalography and electroencephalography in temporal lobe epilepsy: comparison with electrocorticography: technical case report. | Ko DY et al. | โ | 1998 | โ |
| The advantages of digital over analog recording techniques. | Swartz BE | โ | 1998 | โ |
| Timeline of the history of EEG and associated fields. | Swartz BE et al. | โ | 1998 | โ |
| Topographical reliability of mesio-temporal sources of interictal spikes in temporal lobe epilepsy. | Merlet I et al. | โ | 1998 | โ |
| Usefulness of latero-orbital electrodes in detecting interictal epileptiform activity--a study of 60 patients with complex partial seizures. | Gambardella A et al. | โ | 1998 | โ |
| Defining epileptogenic foci: past, present, future. | Ebersole JS | โ | 1997 | โ |
| Dipole modeling in epilepsy surgery candidates. | Boon P et al. | โ | 1997 | โ |
| Dipole modelling and intracranial EEG recording: correlation between dipole and ictal onset zone. | Boon P et al. | โ | 1997 | โ |
| Dipole reconstruction as a method for identifying patients with mesolimbic epilepsy. | Lantz G et al. | โ | 1997 | โ |
| Displaying electroencephalographic dipole sources on magnetic resonance images. | Rodin E et al. | โ | 1997 | โ |
| Extracranial localization of intracranial interictal epileptiform activity using LORETA (low resolution electromagnetic tomography). | Lantz G et al. | โ | 1997 | โ |
| Mutual information analysis and detection of interictal morphological differences in interictal epileptiform discharges of patients with partial epilepsies. | Varma NK et al. | โ | 1997 | โ |
| Dipole-modeling of the visual evoked P300. | Goto Y et al. | โ | 1996 | โ |
| Epileptic syndromes: an underutilized concept. | Benbadis SR et al. | โ | 1996 | โ |
| Localization of temporal lobe foci by ictal EEG patterns. | Ebersole JS et al. | โ | 1996 | โ |
| Long-term electroencephalographic monitoring for diagnosis and management of seizures. | Lagerlund TD et al. | โ | 1996 | โ |
| Quantitative analysis of epileptic discharges. | Wong PK | โ | 1996 | โ |
| Simultaneous intracranial and extracranial recording of interictal epileptiform activity in patients with drug resistant partial epilepsy: patterns of conduction and results from dipole reconstructions. | Lantz G et al. | โ | 1996 | โ |
| Surface mapping of spike potential fields: experienced EEGers vs. computerized analysis. | Koszer S et al. | โ | 1996 | โ |
| Interictal and ictal dipole modelling in patients with refractory partial epilepsy. | Boon P et al. | โ | 1995 | โ |
| Role of I-123-iomazenil SPECT imaging in drug resistant epilepsy with complex partial seizures. | Sjรถholm H et al. | โ | 1995 | โ |
| Some limitations of spatio temporal source models. | Cabrera Fernรกndez D et al. | โ | 1995 | โ |
| Spatio-temporal characteristics of paroxysmal interictal events in human temporal lobe epilepsy. | Badier JM et al. | โ | 1995 | โ |
| A multiple source approach to the correction of eye artifacts. | Berg P et al. | โ | 1994 | โ |
| A test of brain electrical source analysis (BESA): a simulation study. | Miltner W et al. | โ | 1994 | โ |
| Brain source imaging of focal and multifocal epileptiform EEG activity. | Scherg M et al. | โ | 1994 | โ |
| [EEG spike focus topography: study of potential fields]. | Gueye L et al. | โ | 1994 | โ |
| From EEG source localization to source imaging. | Scherg M | โ | 1994 | โ |
| Non-invasive localization of the epileptogenic focus by EEG dipole modeling. | Ebersole JS | โ | 1994 | โ |
| Source analysis of generalized spike-wave complexes. | Rodin EA et al. | โ | 1994 | โ |
| Status of quantitative EEG (QEEG) in clinical practice, 1994. | Duffy FH et al. | โ | 1994 | โ |
| Clinical application of spike averaging to dipole tracing method. | Yoshinaga H et al. | โ | 1993 | โ |
| How well does a three-sphere model predict positions of dipoles in a realistically shaped head? | Roth BJ et al. | โ | 1993 | โ |
| Identification of the hemisphere activated by hemifield visual stimulation using a single equivalent dipole model. | Brigell M et al. | โ | 1993 | โ |
| Identification of the visual motion area (area V5) in the human brain by dipole source analysis. | Probst T et al. | โ | 1993 | โ |
| Models of brain sources. | Scherg M et al. | โ | 1993 | โ |
| Source modelling of the rolandic focus. | Wong PK | โ | 1991 | โ |