This paper is aimed at understanding epileptic patient disorders through the analysis of surface electroencephalograms (EEG). It deals with the detection of spikes or spike-waves based on a nonorthogonal wavelet transform. A multilevel structure is described that locates the temporal segments where abnormal events occur. These events are then visually interpreted by means of a 3D mapping technique. This 3D display makes use of a ray tracing scheme and combines both the functional (the EEG but also its wavelet representation) and the morphological data (acquired from computed tomography [CT] or magnetic resonance imaging [MRI] devices). The results show that a significant reduction of the clinical workload is obtained while the most important episodes are better reviewed and analyzed.
Publié le : 1995-09-05
Classification:
Spike Detection,
Transient Detection,
Wavelets,
Decision,
Hypothesis Testing,
False Alarm,
Statistical Signal Processing,
EEG,
MESH: Algorithms,
MESH: Brain Mapping,
MESH: Signal Processing, Computer-Assisted,
MESH: Tomography,
MESH: Decision Trees,
MESH: Electroencephalography,
MESH: Epilepsy,
MESH: Humans,
MESH: Image Processing, Computer-Assisted,
MESH: Magnetic Resonance Imaging,
MESH: Reproducibility of Results,
MESH: Sensitivity and Specificity,
[SDV.IB]Life Sciences [q-bio]/Bioengineering,
[SPI.SIGNAL]Engineering Sciences [physics]/Signal and Image processing,
[SCCO.NEUR]Cognitive science/Neuroscience,
[MATH.MATH-ST]Mathematics [math]/Statistics [math.ST],
[MATH.MATH-RT]Mathematics [math]/Representation Theory [math.RT],
[INFO.INFO-TS]Computer Science [cs]/Signal and Image Processing
@article{inserm-00130049,
author = {Senhadji, Lotfi and Dillenseger, Jean-Louis and Wendling, Fabrice and Rocha, Cristina and Kinie, Abel},
title = {Wavelet analysis of EEG for three-dimensional mapping of epileptic events.},
journal = {HAL},
volume = {1995},
number = {0},
year = {1995},
language = {en},
url = {http://dml.mathdoc.fr/item/inserm-00130049}
}
Senhadji, Lotfi; Dillenseger, Jean-Louis; Wendling, Fabrice; Rocha, Cristina; Kinie, Abel. Wavelet analysis of EEG for three-dimensional mapping of epileptic events.. HAL, Tome 1995 (1995) no. 0, . http://gdmltest.u-ga.fr/item/inserm-00130049/