2023-12-26 17:00:00
If you’re having trouble sleeping, it may be linked to who sleeps next to you, according to a University of Michigan study. However, this does not appear to be the only effect of a shared layer. The researchers benefited from their work, published in Current Biology on December 22, to take stock.
Sleeping together disrupts sleep
To assess the effects of “co-sleeping” on sleep, lead author Ada Eban-Rothschild and her team used wireless devices and video recordings to simultaneously monitor multiple mice within a group for 24 hours. They thus made an observation: snuggling together at night has a cost. Rodents that sleep together often disrupt each other’s sleep. If one of the animals had insomnia, the others ended up having the same disorder.
Another observation by the scientists: despite more disturbed nights, the mice were ready to give up their favorite sleeping place to sleep with others and have nocturnal contact. This suggests that there is a need for social contact during the night, even if there are inconveniences and impacts on sleep.
Couple: sharing a bed leads to sleep synchronization
Faced with this observation, the team sought to understand why. Although she does not yet have a clear answer, she has observed a synchronization of several neurophysiological characteristics in individuals who sleep together, such as the time of falling asleep and waking up or even the intensity of sleep.
The authors specify in their communiqué : “The timing of episodes of rapid eye movement sleep, or REM sleep, was synchronized among brothers, but not sisters sleeping together or in unfamiliar mice. This suggests that an individual’s internal state, such as feeling safe, controls the degree of synchronization.”.
“Our results further suggest that an animal’s internal state plays a crucial role in coordinating rapid eye movement sleep episodes and oscillatory neurophysiological activity. They expand the current understanding of the extent to which factors social media can modulate sleep. they then conclude in their article.
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