Cited by 294Sleep and Wakefulness ResearchNeuroscience of respiration and sleepCircadian rhythm and melatonin

Hypothalamic Regulation of Sleep and Arousal

Szymusiak, Ronald, McGinty, Dennis·2008·Annals of the New York Academy of Sciences

Abstract

Normal waking is associated with neuronal activity in several chemically defined ascending arousal systems. These include monoaminergic neurons in the brainstem and posterior hypothalamus, cholinergic neurons in the brainstem and basal forebrain, and hypocretin (orexin) neurons in the lateral hypothalamus. Collectively, these systems impart tonic activation to their neuronal targets in the diencephalon and neocortex that is reflected in the low‐voltage fast‐frequency electroencephalogram patterns of wakefulness. Neuronal discharge in these arousal systems declines rapidly at sleep onset. Transitions from waking to sleep, therefore, involve coordinated inhibition of multiple arousal systems. An important source of sleep‐related inhibition of arousal arises from neurons located in the preoptic hypothalamus. These preoptic neurons are strongly activated during sleep, exhibiting sleep/waking state‐dependent discharge patterns that are the reciprocal of that observed in the arousal systems. The majority of preoptic sleep regulatory neurons synthesize the inhibitory neurotransmitter GABA. Anatomical and functional evidence supports the hypothesis that GABAergic neurons in the median preoptic nucleus (MnPN) and ventrolateral preoptic area (VLPO) exert inhibitory control over the monoaminergic systems and the hypocretin system during sleep. Recent findings indicate that MnPN and VLPO neurons integrate homeostatic aspects of sleep regulation and are important targets for endogenous sleep factors, such as adenosine and growth hormone releasing hormone.

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Crossref · 10.1196/annals.1417.027

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  • Hypothalamic preoptic area neurons are important for generating and regulating sleep.

    “Hypothalamic neurons in the preoptic area are thought to be important for both the generation and regulation of sleep [95].”

    From The Biology of General Anesthesia from Paramecium to Primate (2019) · cites this paper as [95]

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Authors
Szymusiak, R., & McGinty, D.
Affiliations
United States Department of Veterans Affairs (US)
Corresponding author
Szymusiak, Ronald
Venue
Annals of the New York Academy of Sciences
Publisher
Wiley
Published
2008-05
Volume
1129
Issue
1
Pages
275-286
ISSN
  • 0077-8923 (ISSN-L)
  • 1749-6632
OpenAlex
W2038008568
Cited by
294
References
106
Citations by year
2026: 11 · 2025: 11 · 2024: 10 · 2023: 8 · 2022: 14 · 2021: 12 · 2020: 8 · 2019: 16 · 2018: 13 · 2017: 18 · 2016: 19 · 2015: 15 · 2014: 7 · 2013: 23 · 2012: 33
FWCI
1.97
Type
journal article
Language
en
Open access
closed
Locations
  • Annals of the New York Academy of Sciences (publishedVersion)
  • PubMed (publishedVersion)
Topics
  • Life Sciences › Neuroscience › Cognitive Neuroscience › Sleep and Wakefulness Research
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Neuroscience of respiration and sleep
  • Life Sciences › Neuroscience › Endocrine and Autonomic Systems › Circadian rhythm and melatonin
Keywords
hypothalamus, sleep regulation, arousal, preoptic area, hypocretin/orexin, GABAergic neurons, median preoptic nucleus, ventrolateral preoptic area, sleep-wake transition, adenosine, growth hormone-releasing hormone, sleep homeostasis
MeSH terms
Animals, Arousal, Homeostasis, Humans, Hypothalamus, Neurons, Preoptic Area, Sleep

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