detecting between 60-90% of IED in patients by the fourth EEG, compared with non-epileptic patients at 0.5-2.5%, the chances of a false diagnosis are very low. 4 Sleep disorders may also be ...

Deep sleep refers to slow-wave sleep — a stage in the sleep cycle when brain waves slow down. Getting enough deep sleep is ...

For humans this happens chiefly during deep sleep, stages 3 and 4, which differ in the percentage of brain activity that’s composed of big, rolling delta waves, as measured on an EEG.