Effects of sleep pressure on endogenous cardiac autonomic activity and body temperature
| Autor: | Alexandra L. Holmes, Drew Dawson, Helen J. Burgess |
|---|---|
| Přispěvatelé: | Dawson, William Andrew, Burgess, Helen Julia, Holmes,Alexandra |
| Rok vydání: | 2002 |
| Předmět: |
Adult
Male medicine.medical_specialty Physiology Electroencephalography Autonomic Nervous System Body Temperature Parasympathetic nervous system Sleep and breathing Heart Conduction System Heart Rate Physiology (medical) Internal medicine Heart rate medicine Pressure Heart rate variability Humans sleep Wakefulness Cardiology (incl Cardiovascular Diseases) medicine.diagnostic_test business.industry temperature Sleep in non-human animals Autonomic nervous system medicine.anatomical_structure Endocrinology Circulatory system Female business Sleep |
| Zdroj: | Journal of applied physiology (Bethesda, Md. : 1985). 92(6) |
| ISSN: | 8750-7587 |
| Popis: | This study investigated the effects of variations in sleep pressure on cardiac autonomic activity and body temperature. In a counterbalanced design, 12 healthy, young subjects (6 men and 6 women) remained recumbent during 30 h of wakefulness (high sleep pressure) and 6 h of wakefulness (low sleep pressure). Both periods of wakefulness were immediately followed by a sleep opportunity, and the first 2 h of sleep were analyzed. During extended hours of wakefulness, a reduction in heart rate was mediated by a decline in cardiac sympathetic activity (measured via preejection period) and the maintenance of cardiac parasympathetic activity (measured via respiratory sinus arrhythmia). In subsequent high-pressure sleep, parasympathetic activity was amplified and sympathetic activity was negatively associated with electroencephalographic slow-wave activity. Sleep deprivation had no impact on foot temperature, but it did alter the pattern of change in core body temperature. A downregulation of cardiac autonomic activity during both extended hours of wakefulness and subsequent sleep may respectively provide “protection” and “recovery” from the temporal extension of cardiac demand. |
| Databáze: | OpenAIRE |
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