Alexander Borbely is director of the Sleep labouratory of the Institute of Pharmacology at the University of Zurich and professor of pharmacology at the Medical School of the University of Zurich.

• * A Historical View of Sleep * Scientists Investigate Sleep: The Different Stages of Sleep * Sleep: A Theme with Variations * Dreams * Sleep and Sleeping Pills * I Didnt Sleep a Wink All Night: Insomnia and Disorders of Sleeping and Waking * Sleep in Animals * Sleep and the Brain * The Search for Endogenous Sleep Substances * Sleep Deprivation * Sleep as a Biological Rhythm * The Purpose of Sleep

Alexander Borbely is director of the Sleep labouratory of the Institute of Pharmacology at the University of Zurich and professor of pharmacology at the Medical School of the University of Zurich.

• * A Historical View of Sleep * Scientists Investigate Sleep: The Different Stages of Sleep * Sleep: A Theme with Variations * Dreams * Sleep and Sleeping Pills * I Didnt Sleep a Wink All Night: Insomnia and Disorders of Sleeping and Waking * Sleep in Animals * Sleep and the Brain * The Search for Endogenous Sleep Substances * Sleep Deprivation * Sleep as a Biological Rhythm * The Purpose of Sleep