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Sleep and Body Temperature Asuka Ishihara 1 , Insung Park 1 , Kumpei Tokuyama 1 1International Institute for Integrative Sleep Medicine (WPI-IIIS), University of Tsukuba Keyword: 視床下部視索前野 , 熱放散 , 遠位-近位部皮膚温度勾配 , preoptic area , heat dissipation , distal proximal skin-temperature gradient pp.173-178
Published Date 2022/2/1
DOI https://doi.org/10.11477/mf.1416202003
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Abstract

Mammals and birds seek a warm environment prior to sleep, which triggers vasodilatation and body cooling. Ambient temperatures outside the thermoneutral zone suppress sleep, particularly rapid eye movement (REM) sleep. We discuss the neurocircuit interactions associated with thermal and sleep regulation that occur primarily in the hypothalamic areas. An increase in ambient temperature stimulates the median preoptic/medial preoptic area of the hypothalamus, decreases body temperature, and increases non-REM sleep. Similarly, optical stimulation of the ventrolateral preoptic nucleus, which contains galanin (VLPOGAL), results in body cooling and non-REM sleep. A decrease in VLPOGAL disrupts sleep in elderly individuals and may also be associated with reduced decline in core body temperature during sleep. However, stimulation of neurons that synthesize melanin-concentrating hormone in the lateral hypothalamus decreases body temperature and induces REM sleep. We also discussed the acute effect of light on sleep induction and decreased body temperature, implicated with gamma-aminobutyric acid-ergic neurons in the preoptic area. Further investigation is needed to determine the mechanisms that induce physiological responses in diurnal and nocturnal species. These studies will contribute to a better understanding of the association between sleep and thermoregulation.


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電子版ISSN 1344-8129 印刷版ISSN 1881-6096 医学書院

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