Visual analysis of raw EEG waveforms is not a trivial process, and hast various limitations, e.g. during long-term recordings. To obtain a quick impression of the background pattern of a routine EEG recording, I recently proposed a technique to transform the raw EEG to an alternative visual domain (USA patent pending).   The Colorful Brain: Visualization of EEG Background Patterns. van Putten MJAM  J Clin Neurophysiol. 2008

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