Hypothalamic Control of Sleep in Aging.
Summary of "Hypothalamic Control of Sleep in Aging."
The timing of sleep and its duration are affected by circadian and homeostatic factors. Physiological and behavioral attributes such as the duration of previous wake period, food availability, temperature, and stress all affect sleep and its quality. As many of these physiological inputs are integrated in the hypothalamus, it is not surprising that this brain structure plays a crucial role in the regulation of sleep. I will discuss this role also in the context of aging, which is associated with changes in both hypothalamic function and the composition of sleep.
Affiliation
Department of Psychiatry and Behavioral Science, Stanford University, Stanford, CA, 94305-5020, USA, asyar@stanford.edu.
Journal Details
This article was published in the following journal.
Name: Neuromolecular medicine
ISSN: 1559-1174
Pages:
Links
- PubMed Source: http://www.ncbi.nlm.nih.gov/pubmed/22402932
- DOI: http://dx.doi.org/10.1007/s12017-012-8175-0
Medical and Biotech [MESH] Definitions
Sleep Stages
Periods of sleep manifested by changes in EEG activity and certain behavioral correlates; includes Stage 1: sleep onset, drowsy sleep; Stage 2: light sleep; Stages 3 and 4: delta sleep, light sleep, deep sleep, telencephalic sleep.
Sleep Disorders, Intrinsic
Dyssomnias (i.e., insomnias or hypersomnias) associated with dysfunction of internal sleep mechanisms or secondary to a sleep-related medical disorder (e.g., sleep apnea, post-traumatic sleep disorders, etc.). (From Thorpy, Sleep Disorders Medicine, 1994, p187)
Parasomnias
Movements or behaviors associated with sleep, sleep stages, or partial arousals from sleep that may impair sleep maintenance. Parasomnias are generally divided into four groups: arousal disorders, sleep-wake transition disorders, parasomnias of REM sleep, and nonspecific parasomnias. (From Thorpy, Sleep Disorders Medicine, 1994, p191)
Hypothalamus, Posterior
The part of the hypothalamus posterior to the middle region consisting of several nuclei including the medial mamillary nucleus, lateral mamillary nucleus, and posterior hypothalamic nucleus (posterior hypothalamic area). The posterior hypothalamic area is concerned with control of sympathetic responses and is sensitive to conditions of decreasing temperature and controls the mechanisms for the conservation and increased production of heat.
Hypersomnolence, Idiopathic
A sleep disorder of central nervous system origin characterized by prolonged nocturnal sleep and periods of daytime drowsiness. Affected individuals experience difficulty with awakening in the morning and may have associated sleep drunkenness, automatic behaviors, and memory disturbances. This condition differs from narcolepsy in that daytime sleep periods are longer, there is no association with CATAPLEXY, and the multiple sleep latency onset test does not record sleep-onset rapid eye movement sleep. (From Chokroverty, Sleep Disorders Medicine, 1994, pp319-20; Psychiatry Clin Neurosci 1998 Apr:52(2):125-129)
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