Neurology ·
Analysis of 57 Imaging Studies Links Sleep Disorders to Brain Structure Differences
A synthesis of 57 adult brain-imaging studies found structural differences associated with several sleep disorders. The analysis reported a shared association involving the thalamus and additional differences associated with parasomnias, but it cannot determine whether sleep disorders cause these changes.
- 57 imaging studies of adults were analyzed.
- Both disorder groups were associated with thalamic differences.
- Parasomnias showed additional posterior cingulate differences.
- The analysis cannot establish causation.
Researchers at Florida International University combined findings from 57 brain-imaging studies of adults to examine structural brain differences associated with sleep disorders. They compared dyssomnias, including insomnia and sleep apnea, with parasomnias, such as sleepwalking, nightmares and sleep terrors. The source does not report the total number of participants or provide details of the analysis methods or effect sizes.
Both disorder groups were associated with differences in the thalamus, including the pulvinar, a region involved in attention and cognitive control. For parasomnias, the researchers also identified differences in the posterior cingulate cortex, which is involved in motivation, decision-making and emotional regulation. They did not find a consistent structural pattern exclusive to dyssomnias.
The findings point to brain regions for further study but do not establish that sleep disorders cause structural changes, or that those changes lead to cognitive or emotional symptoms. The researchers said future work will examine individual parasomnias in greater detail. The results do not establish a diagnostic imaging approach or support changes to clinical management.
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Scientific Reports (via ScienceDaily): Scientists discover hidden brain changes linked to common sleep disorders ↗This is an automated AI-condensed summary that has not yet been reviewed by an editor. Always consult the full item at the original source.