Knowledge Tree
Relations (1)
related 2.00 — strongly supporting 3 facts
The relationship is established by studies examining how sleep duration influences the volume of various brain regions, as evidenced by the lack of significant differences in specific groups [1], the observed quadratic relationship between these variables [2], and the use of permutation testing to analyze volume differences across brain regions [3].
Facts (3)
Sources
Impact of sleep duration on executive function and brain structure nature.com 3 facts
claimThe study demonstrated a quadratic relationship between sleep duration and brain volume in several brain regions, while other areas showed lower volume only with longer sleep durations.
claimThere were no brain regions that were significantly smaller in volume in the group of individuals who slept between six and eight hours compared to other sleep duration groups.
procedureResearchers used permutation testing to analyze brain volume differences by shuffling datapoints for two different sleep duration groups across brain regions, testing 1000 permuted datasets per region.