September 1970

II. All-night EEG Studies of Chloral Hydrate, Flurazepam, and Methaqualone

Author Affiliations

Los Angeles
From the departments of psychiatry (Drs. A. Kales and Tan and Mr. Scharf) and anatomy (Dr. J. Kales), Sleep Research and Treatment Facility, and the Brain Research Institute (Dr. A. Kales), UCLA School of Medicine, Los Angeles.

Arch Gen Psychiatry. 1970;23(3):219-225. doi:10.1001/archpsyc.1970.01750030027005

WE PREVIOUSLY reported that altered sleep patterns occur during the administration and following withdrawal of glutethimide (Doriden), methyprylon (Noludar), and pentobarbital (Nembutal).1 The clinical problems associated with these alterations, such as unpleasant dreams, nightmares, drug dependency, and insomnia, were also discussed. These studies suggested that further investigation of the effects of other drugs would be necessary in order to find hypnotics which did not result in sleep alterations and adverse clinical disturbance. Preliminary findings suggested that the nonbarbiturate hypnotics chloral hydrate (Noctec),2 flurazepam (Dalmane) ,3,4 and methaqualone (Quaalude)5 might fulfill these requirements. We decided, therefore, to systematically study each of these hypnotic drugs.

Methods  Subjects were male, 20 to 30 years of age without any medical illnesses, allergies, drug use, or sleep disturbance. During the experiment they were instructed to continue to abstain from using any drugs, including alcohol, to maintain their usual level of physical

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