Seizures are rare while dreaming in rapid eye movement (REM) sleep. New research, however, suggests seizures may rebound during unstable REM sleep. This may be due to brain wiring (connectivity) since a highly connected brain is more prone to seizures, and connectivity changes from wakefulness to sleep. Brainwave tracings (EEG) can generate connectivity maps (connectomes) but adequate connectome resolution requires many EEG electrodes (high density EEG). This study uses high density EEG to examine brain connectomes and seizure susceptibility in unstable REM sleep.