The Psychomotor Vigilance Test as a measure of alertness and sleep inertia in people with central disorders of hypersomnolence.

Study Objectives: The central disorders of hypersomnolence (CDH) manifest with daytime sleepiness, often accompanied by cognitive symptoms. Objective tests characterizing cognitive dysfunction may have diagnostic utility. Further, because some people with CDH report worsening cognition upon awakening, cognitive testing before and after napping may provide additional diagnostic information.

Circadian Phase and Phase Angle Disorders in Primary Insomnia.

Objectives: We aimed to identify the prevalence of circadian phase and phase angle abnormalities in patients with insomnia.

Methods: We conducted a cross-sectional, multicenter study at three sleep laboratories in the United States and Australia. Patients with insomnia and healthy control participants completed a sleep log for 7 days.

Durability of treatment response to zolpidem with three different maintenance regimens: a preliminary study.

Background And Aim: At present, there is no consensus regarding how to medically manage chronic insomnia in the long term. The unstated standard of practice is for patients to use hypnotics intermittently. The present study aimed to compare a partial reinforcement strategy with nightly and intermittent dosing strategies for its potential as a maintenance therapy.

Neurobehavioral performance impairment in insomnia: relationships with self-reported sleep and daytime functioning.

Study Objectives: Despite the high prevalence of insomnia, daytime consequences of the disorder are poorly characterized. This study aimed to identify neurobehavioral impairments associated with insomnia, and to investigate relationships between these impairments and subjective ratings of sleep and daytime dysfunction.

Design: Cross-sectional, multicenter study.