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Ethanol, a clear colorless alcohol, has been consumed by humans for millennia, but its effects on the body are far from benign. At lower doses, it induces decreased inhibitions and loquaciousness, leading to its social appeal. However, it can cause severe consequences at higher doses, such as coma and respiratory depression, due to its zero-order elimination kinetics. Chronic ethanol abuse wreaks havoc on multiple organ systems, particularly the CNS and the liver. Abrupt cessation of ethanol...
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Depressant drugs, including alcohol and sedative-hypnotics, diminish central nervous system activity by enhancing the action of gamma-aminobutyric acid (GABA), a neurotransmitter that reduces brain activity and promotes relaxation. These substances can have various therapeutic uses but also pose significant risks, especially when misused or combined.
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Substance use disorders involve a pattern of using drugs more extensively than intended and continuing use despite harmful consequences. This includes legal substances like alcohol and nicotine, as well as illegal drugs. These disorders often involve both physical and psychological dependence, reflecting compulsive use of substances that significantly alter thoughts, feelings, and behaviors, contributing to a major public health issue.
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Alcohol and the sleeping brain.

Ian M Colrain1, Christian L Nicholas2, Fiona C Baker3

  • 1Center for Health Sciences, SRI International, Menlo Park, CA, USA; Melbourne School of Psychological Sciences, The University of Melbourne, Parkville, Vic., Australia.

Handbook of Clinical Neurology
|October 14, 2014
PubMed
Summary
This summary is machine-generated.

Alcohol disrupts sleep patterns, initially aiding sleep onset but causing poor sleep quality later. Chronic alcohol use and dependence lead to persistent sleep disturbances, potentially increasing relapse risk.

Keywords:
REMacute alcohol K-complexalcoholismslow-wave sleep

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Area of Science:

  • Neuroscience
  • Sleep Medicine
  • Addiction Research

Background:

  • Alcohol is a sedative impacting neurotransmitter systems crucial for sleep regulation.
  • Alcohol consumption significantly alters sleep architecture and quality.

Purpose of the Study:

  • To review acute and chronic alcohol effects on sleep architecture and electroencephalogram.
  • To explore neurochemical mechanisms, tolerance, sex differences, and sleep homeostasis.
  • To examine sleep disruption's role in adolescent alcohol dependence and recovery.

Main Methods:

  • Review of existing scientific literature on alcohol and sleep.
  • Analysis of electroencephalogram (EEG) data related to alcohol's impact on sleep stages.
  • Discussion of neurochemical pathways and physiological effects.

Main Results:

  • Acute alcohol intake decreases sleep onset latency but disrupts sleep architecture later.
  • Chronic alcohol abuse is linked to persistent sleep disturbances, including reduced slow-wave sleep.
  • Tolerance to alcohol's sleep effects can develop with repeated administration.

Conclusions:

  • Sleep disruption is a significant factor in the development and maintenance of alcohol dependence.
  • Understanding alcohol's effects on sleep is crucial for treating problem drinking and aiding abstinence.
  • Further research is needed to clarify the bidirectional relationship between sleep and alcoholism.