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    melanin-concentrating hormone (MCH) neurons tagged posts

    ‘Goldilocks’ Neurons promote REM Sleep

    June 20, 2019, Categories  Biology/Biotechnology, Health/Medical

    Using a technique called optogenetics, a laser light was used to turn off or on MCH neurons time locked with the temperature warming phases. It demonstrated the necessity of the MCH neurons to increase REM sleep during warming toward “just right” room temperature. Picture: Pascal Gugler for Insel Gruppe AG

    It has been a mystery why REM sleep, or dream sleep, increases when the room temperature is ‘just right’. Neuroscientists show that melanin-concentrating hormone neurons within the hypothalamus increase REM sleep when the need for body temperature defense is minimized, such as when sleeping in a warm and comfortable room temperature. These data have important implications for the function of REM sleep.

    Every night while sleeping, we cycle between two very different states of sleep...

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