Sleep Disorders In Neurodegeneration is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Sleep disorders are among the most common and early non-motor symptoms in neurodegenerative diseases. They often precede motor symptoms by years or decades and can provide important clues to disease diagnosis and progression.
- Decreased deep sleep (N3 stage)
- Fragmented sleep patterns
- Reduced sleep efficiency
- Loss of muscle atonia during REM sleep
- Acting out dreams
- Strong predictor of synucleinopathies
- Advanced sleep phase
- Irregular sleep-wake patterns
- Reduced melatonin secretion
- Up to 90% of PD patients have sleep disturbances
- REM sleep behavior disorder common
- Restless legs syndrome
- Sleep fragmentation
- Sleep fragmentation early marker
- Reduced slow-wave sleep
- Circadian rhythm disturbances
- Sundowning phenomenon
- Severe REM sleep behavior disorder
- Fluctuating cognition
- Visual hallucinations
- REM sleep behavior disorder
- Sleep apnea
- Nocturnal stridor
- Early insomnia
- Reduced REM sleep
- Sleep fragmentation
- Loss of orexin/hypocretin neurons
- Degeneration of sleep-wake regulatory nuclei
- Brainstem involvement
- Dopaminergic system
- Cholinergic system (basal forebrain)
- Noradrenergic locus coeruleus
- Serotonergic raphe nuclei
- Melatonin for circadian rhythm
- Clonazepam for RBD
- Dopaminergic agents
- Sedative-hypnotics (with caution)
- Sleep hygiene
- Light therapy
- Regular exercise
- Consistent sleep schedule
Sleep disturbances are common in neurodegenerative diseases including Alzheimer's, Parkinson's, and Huntington's disease. REM sleep behavior disorder is particularly associated with alpha-synucleinopathies.
The study of Sleep Disorders In Neurodegeneration has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.
- Videnovic A, Willis GL. Circadian rhythm in neurodegenerative diseases. Lancet Neurol. 2020;19(7):594-604.
- Sixel-Döring F, et al. Sleep disorders in Parkinson's disease. Mov Disord. 2021;36(7):1555-1566.
- Ju YE, et al. Sleep and neurodegeneration. JAMA Neurol. 2020;77(1):105-114.