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INTRODUCTION To our knowledge there is no evidence in the literature about the relationship between subjective sleep estimation and objective sleep variables in depression. It is not known whether the subjective estimation of sleep quality and sleep duration is directly related to any objective sleep variable in depressed patients. METHODS Thirty patients(More)
Polysomnography was performed during two consecutive nights in 23 patients with major depression. After every final awakening patients estimated the change of their mood from evening to morning: 1. Mood worse in the morning than in the evening; 2. Mood does not change; 3. Mood better in the morning. When mood was estimated as being better in the morning(More)
INTRODUCTION REM sleep latency is a clinically significant sleep variable that is found to be decreased in several psychiatric disorders. However, it is not known whether alteration of REM sleep latency is similar across disorders. In order to test whether incorporation of wakefulness in the first sleep cycle has a different outcome on REM sleep latency in(More)
Twenty-seven depressed patients and 10 healthy subjects were investigated in the sleep laboratory during two to three consecutive nights. Eleven of the 27 patients demonstrated the "first night effect" (group I) and 11 other patients demonstrated a clear absence of the "first night effect" (group II). Five of the 27 depressed patients were omitted from the(More)
Neocortical EEG slow wave activity (SWA) in the delta frequency band (0.5–4.0 Hz) is a hallmark of slow wave sleep (SWS) and its power is a function of prior wake duration and an indicator of a sleep need. SWS is considered the most important stage for realization of recovery functions of sleep. Possibility of impact on characteristics of a night sleep by(More)
Changes in sleep characteristics were studied under the non-wake-up stimulation with current pulses of less than 1 μA on average, applied to the palmar surface skin receptors during Δ-sleep. A significant increase in duration of the first and second cycles of deep sleep has been found, as well as a shorter latent period before the Δ-sleep onset and a longer(More)
642 Good night sleep is a necessary condition for effecc tive activity during the day time. There are two main phases of sleep: the NREM (slow) and REM sleep (paradoxical) having different mechanisms and conn stituting the night cycle that lasts for 1.5 h. According to the international classification of Rechtschaffen and Kales [1], night sleep is divided(More)
The integrative function of the subcortical brain structures in higher animals, realized partially via points of reinforcement and avoidance present in hypothalamic nuclei or via the hypothalamo-hypophysial system, suggest the special role these points play in the general and specific schemes of regulation of the nerve system. Stimulation of these points(More)
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