Communications Biology: 7 hours of sleep a day is best for executive function and brain structure

Sleep is vital to everyday life and plays an important role in a range of physiological functions
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Sleep in particular has a huge impact on the brain, and a better understanding of this may play a key role in maintaining healthy cognitive aging as people age

Sleep is vital to everyday life and plays an important role in a range of physiological functions

Ask scientific questions ① What is the optimal amount of sleep for cognitive function? ② Does this change over the course of a person’s life? ③ How does sleep relate to structural brain health

Xin You Tai et al.
published a research article entitled Impact of sleep duration on executive function and brain structure in the journal Communications Biology, investigating the relationship between sleep duration and cognitive performance in 479,420 healthy individuals aged 38-73.
The effects of socioeconomic factors, cardiovascular and genetic risk were also considered
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The relationship between sleep and brain volume was also explored in a subgroup of 37,898 people who participated in multimodal brain imaging

Xin You Tai et al.

The team examined sleep and cognition data from mid-to-late healthy individuals (ages 38-73) from the UK Biobank (N=479,420) , and a subgroup (N =37,553 ) in relation to brain structure .

The team examined sleep and cognition data from mid-to-late healthy individuals (ages 38-73) from the UK Biobank (N= 479,420) , and a subgroup (N = 37,553 ) in relation to brain structure .

The relationship between age, sleep duration and executive function

The relationship between age, sleep duration and executive function

Seven hours of sleep a day was associated with the highest cognitive performance, and every hour below and above this sleep time decreased
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This quadratic relationship persisted in older adults (>60 years, N = 212,006) .
 

Seven hours of sleep per day was associated with the highest cognitive performance, and every hour below and above this sleep time decreased .
Seven hours of sleep per day was associated with the highest cognitive performance, and each hour below and above this sleep time decreased.

Individuals who slept between 6 and 8 hours had significantly increased gray matter volume in 46 of 139 distinct brain regions, including the orbitofrontal cortex, hippocampus, precentral gyrus, right frontal pole, and cerebellar subregions

Those who slept 6-8 hours had larger brain regions than those who slept longer

Those who slept 6-8 hours had larger brain regions than those who slept longer

Relationship between white matter hyperintensity load and sleep duration, sleep trajectory; sleep duration, brain volume, and executive function
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Relationship between white matter hyperintensity load and sleep duration, sleep trajectory; sleep duration, brain volume, and executive function
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Several brain regions showed a quadratic relationship between sleep duration and volume
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Several brain regions showed a quadratic relationship between sleep duration and volume
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The findings provide insights into the relationship between sleep and the integrity of broad brain structural networks, and demonstrate how sleep duration, a modifiable life>
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The findings provide insights into the relationship between sleep and the integrity of broad brain structural networks, and demonstrate how sleep duration, a modifiable life>
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The findings provide insights into the relationship between sleep and the integrity of broad brain structural networks, and demonstrate how sleep duration, a modifiable life>

original source

Tai, XY, Chen, C.
, Manohar, S.
  et al.
 Impact of sleep duration on executive function and brain structure.
  Commun Biol  5,  201 (2022).
https://doi.
org/10.
1038/s42003-022- 03123-3

Tai, XY, Chen, C.
, Manohar, S.
  et al.
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