Knocking on Kleitman's door: the view from 50 years later

References 

1. Aserinsky E, Kleitman N. Regularly occurring periods of eye motility and concomitant phenomena during sleep. Science. 1953;118:273–274
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2. Dement W. Dream recall and eye movements during sleep in schizophrenics and normals. J Neru Ment Dis. 1955;122:263–269
3. Dement W, Kleitman N. Cyclic variations in EEG during sleep and their relation to eye movements, body motility, and dreaming. EEG Clin Neurophysiol. 1957;9:673–690
4. Dement W. The occurrence of low voltage, fast electroencephalogram patterns during behavioral sleep in the cat. EEG Clin Neurophysiol. 1957;10:291–296