Like food and water, sleep is essential for all. In this excellent study aid, the author looks at the nature and purpose of sleeping andrelated disorders, dreamingand hypnosis. This clear and focused introductionprovides a fantasticentry point for studentsseeking a deeper understanding of altered states of awareness.

SIMON GREEN is Director of Undergraduate Studies and Senior Lecturer at Birkbeck University, UK.

Brain Activity and Levels of Consciousness
Hypnosis
Biological Rhythms
The Nature of Sleep
Functions of Sleep
Disorders of Sleep
Sleep and Dreaming.