[Biologic artifacts in quantitative EEG].
We studied the influence of five biologic artifacts sources on quantitative EEG (blinking, forced eyes closure, forced jaw closure, tongue movements and pursuit eyes movements) through both visual and spectral analysis, with the purpose of verifying how do these artifacts can be seen in a cartographic way. We found that the spectrums potentials showed the same topographic display that was found through visual analysis. Visual analysis was superior than the quantitative evaluation to recognise the artifacts, as the former preserved the morphological display of the paroxysms. However it is important know how do the potentials are represented in quantitative maps, so that they can be identified as artifacts and not as pathologic EEG activity.
Anghinah
Renato
R
Laboratório de Neurociências, Instituto de Psiquiatria, Hospital das Clínicas, Universidade de São Paulo, São Paulo, SP, Brazil.
Basile
Luis I
LI
Schmidt
Magali T
MT
Sameshima
Koichi
K
Gattaz
Wagner Farid
WF
D000328:Adult; D016477:Artifacts; D001931:Brain Mapping / Q000379:methods*; D004569:Electroencephalography / Q000379:methods*; D005260:Female; D006801:Humans; D008297:Male