Photo: Waterhouse-sleep and his half-brother death-1874
John William Waterhouse – Unknown
- Public Domain
- File:Waterhouse-sleep and his half-brother death-1874.jpg
- Created: 1874date QS:P571,+1874-00-00T00:00:00Z/9
http://JohnBatchelorShow.com/contact
http://JohnBatchelorShow.com/schedules
Twitter: @BatchelorShow
What is the significance of the twenty-five thousand times you are asleep in your lifetime? 2 of 2: Vladyslav V. Vyazovskiy @ScienceMagazine.
We generally fall asleep and then wake up at least 25,000 to 30,000 times throughout our lifetime. Transitions between sleep and waking appear to occur seamlessly, but the underlying mechanisms are extraordinarily complex. There is much interest in characterizing the brain’s neuronal circuitry that control these shifts in state, and recent research has pointed to specific populations of neurons in the brainstem, hypothalamus, basal forebrain, and thalamus. On page 957 of this issue, Hayashi et al. (1) report that a specific population of neurons in the early developing hindbrain gives rise to subpopulations that contribute to the sleep-wake circuitry.
