A topographic background symmetry display for comparison with routine EEG.
We describe a new approach for assessing EEG background symmetry by topographic display of spectral band amplitude. Asymmetry is expressed as a percentage in much the same way that routine EEG symmetry comparisons are made. Spectral graphs of each channel are simultaneously displayed to facilitate interpretation. This method enhances the use of topographic mapping as an adjunct to conventional EEG interpretation.
D001931:Brain Mapping; D004569:Electroencephalography; D006801:Humans; D008297:Male; D008875:Middle Aged