The link between poor sleep and mental health problems could be related to deficits in brain regions that keep unwanted thoughts out of mind.
The link between poor sleep and mental health problems could be related to deficits in brain regions that keep unwanted thoughts out of mind, according to research from the University of East Anglia .
Functional neuroimaging was used to reveal for the first time that deficits in memory control after sleep deprivation are related to difficulties in engaging brain regions that support the inhibition of memory retrieval, and that the overnight rejuvenation of these brain regions is associated with rapid eye movement sleep.
"Given that memories play a central role in our affective perception of the external world, memory control failures may go a long way towards explaining the relationship between sleep loss and emotional dysregulation. During memory suppression, the well-rested participants showed more activation in the right dorsolateral prefrontal cortex -- a brain region that controls thoughts, actions, and emotions -- compared to those who stayed awake all night. The rested participants also showed reduced activity in the hippocampus -- a brain region involved in memory retrieval -- during attempts to suppress unwanted memories.
Marcus O. Harrington, Theodoros Karapanagiotidis, Lauryn Phillips, Jonathan Smallwood, Michael C. Anderson, Scott A. Cairney.People in early middle age who have poor sleep quality, including having difficulty falling or staying asleep, have more signs of poor brain health in late middle age, according to a new study. The ...
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