Hypernychthemeral Sleep-Wake Cycle: Some Hidden Regularities
نویسندگان
چکیده
منابع مشابه
[Sleep-wake cycle mechanisms].
Neurochemically distinct systems interact regulating sleep and wakefulness. Wakefulness is promoted by aminergic, acetylcholinergic brainstem and hypothalamic systems. Each of these arousal systems supports wakefulness and coordinated activity is required for alertness and EEG activation. Neurons in the pons and preoptic area control rapid eye movement and non-rapid eye movement sleep. Mutual i...
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The present study was undertaken to investigate the effects of some H(1)-antagonists on the sleep-wake cycle in sleep-disturbed rats in comparison with those of nitrazepam. Electrodes were chronically implanted into the frontal cortex and the dorsal neck muscle of rats for the electroencephalogram (EEG) and electromyogram (EMG), respectively. EEG and EMG were recorded with an electroencephalogr...
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It is beyond doubt that the timing of sleep is under control of the circadian pacemaker. Humans are a diurnal species; they sleep mostly at night, and they do so at approximately 24-h intervals. If they do not adhere to this general pattern, for instance when working night shifts or when travelling across time zones, they experience the stubborn influence of their circadian clock. In recent yea...
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The light/dark cycle is the main zeitgeber acting on the mammalian circadian system; nevertheless, distinct environments, such as those with and without electricity may provoke important resetting effects on the clock. The aim of this study was to describe sleep/wake patterns of adolescents living in two Brazilian rural regions. In the first population, 120 adolescents participated in the study...
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THE LAST DECADES HAVE WITNESSED an upsurge of neuropeptide research. These substances regulate or influence various functions like appetite, water intake, learning and memory, adaptive responses to environmental stress, thermoregulation and fever, social behavior, and sleep. One function may be affected by several peptides, and a single peptide can be involved in different functions—a general a...
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ژورنال
عنوان ژورنال: Sleep
سال: 1986
ISSN: 0161-8105,1550-9109
DOI: 10.1093/sleep/9.2.324