Subjective sleepiness correlates negatively with global alpha (8–12 Hz) and positively with central frontal theta (4–8 Hz) frequencies in the human resting awake electroencephalogram

Authors: Arjen M. Strijkstra, Domien G. M. Beersma, Berdine Drayer, Nynke Halbesma, Serge Daan - Neuroscience Letters 2003 cited by 322