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Impact of sleep restriction on the structural brain network
Min-Hee Lee1, Youngjin Lee, Yoon Ho Hwang
1Departments of aBiomedical Engineering bRadiological Science, Yonsei University, Wonju cDepartment of Radiological Science, Eulji University, Seongnam, Republic of Korea.
Neuroreport
|October 19, 2016
Summary
Sleep restriction (SR) impacts brain structure by reducing alternative neural pathways and altering connectivity. This study reveals how insufficient sleep affects the brain's structural network.
Area of Science:
- Neuroscience
- Medical Imaging
- Network Science
Background:
- Sleep restriction (SR) is a condition of insufficient sleep, potentially leading to brain injury.
- Understanding the effects of SR on brain structure is crucial for identifying functional impairments.
Purpose of the Study:
- To investigate the impact of sleep restriction on the structural brain network.
- To analyze alterations in brain connectivity and network efficiency due to insufficient sleep.
Main Methods:
- Acquired diffusion MRI (dMRI) data from two groups: one with SR (≤5.5h/night) and a normal sleep group (7h/night).
- Constructed structural brain networks from dMRI data.
- Analyzed networks using graph theoretical approaches to assess vulnerability and regional efficiency.
Main Results:
- The SR group exhibited increased vulnerability to targeted node attacks compared to the normal group.
- Alterations in regional efficiency were observed in specific brain areas, including frontal gyri, occipital gyri, insula, fusiform, supplementary motor area, and cingulate gyrus.
- Findings suggest SR may reduce alternative neuronal pathways and rewire neuronal fibers.
Conclusions:
- Sleep restriction can lead to significant alterations in the structural brain network.
- These changes may result in functional impairments and reduced brain connectivity.
- Investigating structural brain networks provides novel insights into the neurological consequences of sleep restriction.
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