A simple method for 3-dimensional localization of epileptic activity recorded by simultaneous EEG and MEG.

Electroencephalography and Clinical Neurophysiology
Carlo Salustri, R M Chapman

Abstract

A simple method is presented to average target patterns in the magnetoencephalographic trace of epileptic activity by finding markers in an EEG channel. This method proves to be useful even in cases of low magnetic signal-to-noise ratio. After simultaneously recording electric and magnetic activity the user chooses in the electric trace a template of interest and determines within the same trace all the time points at which the EEG pattern is highly correlated with the chosen template. The magnetic trace portions recorded at those times are averaged together, extracting in this way the magnetic signal from the noise. The MEG results are applied to localize in the brain the active sources that contribute to the recorded signals.

References

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Dec 1, 1982·The Review of Scientific Instruments·G L RomaniL Kaufman

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Citations

Jan 1, 1991·Brain Topography·P A van den ElsenG H Wieneke
Mar 1, 1996·Seizure : the Journal of the British Epilepsy Association·G Alarcon
Apr 1, 1994·Journal of Neurology, Neurosurgery, and Psychiatry·G AlarconC E Polkey
May 8, 1998·The Journal of Hand Surgery : Journal of the British Society for Surgery of the Hand·C A Brussé, F D Burke
Sep 1, 1991·The International Journal of Neuroscience·D CrispK W Podrouzek

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