I had abnormal EEG's decades ago but they were also labeled as "inconclusive." There was no pattern to the abnormality. More recent qEEG's show that my brain easily over-loads with information. It does not function properly in its need to filter out and reduce extraneous stimuli. Lack of oxygenated sleep makes this problem severe. I work hard at sleep hygiene to avoid CSA episodes. I have them during waking times occasionally. The waking apnea events tend to come in clusters.