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Published on: October 2, 2019
A Thalamocortical Perspective on Sleep Spindle Alterations in Neurodevelopmental Disorders.
Carolina Gutierrez Herrera1,2,3, Leila Tarokh4,5
1Department of Neurology, Inselspital, Bern University Hospital and University of Bern, Rosenbühlgasse 25, Bern, Switzerland.
Sleep spindle activity alterations reflect thalamocortical system deficits in neurodevelopmental disorders. These findings suggest sleep spindles may serve as biomarkers for diagnosis and treatment monitoring.
Area of Science:
- Neuroscience
- Developmental Biology
- Sleep Medicine
Background:
- Neurodevelopmental disorders impact nervous system development and function, often involving the thalamocortical system.
- Sleep spindles, NREM sleep oscillations, offer an in vivo measure of thalamocortical system function.
Purpose of the Study:
- Review the development of the thalamocortical system and sleep spindles in humans and rodent models.
- Discuss sleep spindle alterations in intellectual disability, ADHD, autism, and schizophrenia.
- Synthesize findings to understand neurodevelopmental disorder pathogenesis.
Main Methods:
- Literature review of human and rodent studies on sleep spindles and neurodevelopmental disorders.
- Analysis of thalamocortical system development and its relation to sleep spindle generation.
- Integration of findings to connect sleep spindle deficits with neurodevelopmental disorder mechanisms.
Main Results:
- Human studies show altered sleep spindles in various neurodevelopmental disorders.
- Rodent models reveal underlying mechanisms for sleep spindle deficits.
- A convergence of human and animal data illuminates potential pathways in neurodevelopmental disorders.
Conclusions:
- Deficits in the thalamocortical system, characteristic of neurodevelopmental disorders, are mirrored in sleep spindle activity.
- Sleep spindles show potential as biomarkers for drug discovery, risk stratification, and treatment monitoring in neurodevelopmental disorders.
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