REM dream activity of insomnia sufferers: a systematic comparison with good sleepers.

Background And Objective: The dream activity of patients with primary insomnia (PI) has rarely been studied, especially using in-laboratory dream collection, although dreams could be linked to their state of hyperarousal and their negative waking experiences. The objective of the study was to compare patients with PI and good sleeper controls (GSCs) in terms of dream recall frequency and dream content.

Patients/methods: Polysomnography was recorded in 12 patients with PI and 12 GSCs (aged between 30 and 45 years) for five consecutive nights.

REM sleep as a potential indicator of hyperarousal in psychophysiological and paradoxical insomnia sufferers.

Study Objectives: The objective was to study REM sleep macrostructure and microstructure as potential indicators of hyperarousal in insomnia by comparing good sleepers (GS) and insomnia sufferers (INS) (subdivided into psychophysiological "PSY-I" and paradoxical "PARA-I").

Design: Cross-sectional comparisons of GS, PSY-I and PARA-I.

Setting: Participants slept for 4 consecutive nights in the laboratory where PSG was recorded.

Types of primary insomnia: is hyperarousal also present during napping?

Study Objectives: The objective of this study was to identify if hyperarousal is a 24-hour phenomenon in insomnia by comparing sleep during napping between good sleepers (GS) and Insomnia sufferers (INS) (subdivided into paradoxical "PARA-I" and psychophysiological "PSY-I") following a mentally challenging battery of cognitive tests.

Design: Cross-sectional comparisons of GS, PSY-I, and PARA-I.

Setting: Participants slept for 4 consecutive nights in the laboratory where PSG was recorded.

REM and NREM power spectral analysis on two consecutive nights in psychophysiological and paradoxical insomnia sufferers.

The objectives of the study were to examine EEG activities using power spectral analysis (PSA) of good sleepers (GS), psychophysiological (PsyI) and paradoxical (ParI) insomnia sufferers on two consecutive nights. Participants completed three nights of PSG recordings in a sleep laboratory following a clinical evaluation. Participants were 26 PsyI, 20 ParI and 21 GS (mean age=40 years, SD=9.