The discovery by Kleitman and his students in the early 1950's that physiological measures could accurately predict the occurrence of dreaming in the sleeping subject has appealed to the imagination of many. Innumerable researches have now been done with the electroencephalogram/electro-oculogram (EEG/EOG) technique developing out of these studies leading to a tremendous proliferation of research articles, summarizing monographs, encyclopedic compilations, and popular accounts of the research. The most important single summarizing work in the field of sleep is clearly the 1963 revision of Kleitman's monumental Sleep and Wakefulness. As opposed to Kleitman's work with a bibliography of 4,337 entries, the present work limits itself to the psychology of sleep and has a bibliography of 136 entries. The stated purpose of this book "is the study of mental experience during sleep—what it is, and why it is what it is."
Foulkes begins by presenting the research findings obtained from EEG/EOG