Abstract
Purpose: To describe some of the popular programs that convert EEG and related signals from 2D space to the image in 3D. Methods: One possibility to solve the inverse problem (2D into 3D conversion) is to use commercial software BESA or CURRY, or to use non-commercial ones, such as Fieldtrip, EEGLAB and SPM8, that require MATLAB. Results: We analyzed (1) the average of 7 theta epochs, (2) the average of 38 epileptic spikes obtained from scalp EEG during nonconvulsive seizure of one candidate for re-operative surgery of the left temporal region and (3) preictal desynchronized epoch of a few seconds duration just before spikes, at the very beginning of his convulsive seizure. 3D reconstructions of CLARA and SSLOFO showed narrower distribution of pathological potentials, whereas LORETA and LAURA gave more disperse ones. Conclusion: The methods of neurophysiological imaging today presents a useful supplement, still inadmissible to apply to patients, but, in the future, this technique might represent a standard protocol of results presentation, similar to MRI, CT, PET and SPECT imaging.
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