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CNS Depressants: Alcohol and Nicotine

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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Dementia is an acquired, progressive syndrome characterized by a decline in multiple cognitive domains severe enough to impair daily functioning and reduce independence. Although memory loss is a central feature, the diagnosis requires additional deficits involving language, executive function, visuospatial skills, judgment, calculation, or abstract reasoning. These cognitive impairments reflect underlying neurodegenerative or vascular processes that gradually disrupt neuronal networks...
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Alzheimer disease is a chronic, progressive, and irreversible neurodegenerative disorder and the most common cause of dementia in older adults. It leads to gradual neuronal loss, causing cognitive decline, behavioral changes, and loss of functional independence.Risk Factors and EtiologyThe disease is multifactorial. Age is the strongest risk factor, with prevalence doubling every 5 years after age 65. Genetic factors include mutations in genes such as APP, PSEN1, and PSEN2, which are associated...
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Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication
09:26

Disruption of Frontal Lobe Neural Synchrony During Cognitive Control by Alcohol Intoxication

Published on: February 6, 2019

[Alcohol induced cognitive deficits].

Elisabeth Weiss1, Evelin M Singewald, Beatrix Ruepp

  • 1Institut für Psychologie, Karl Franzens Universität Graz, Graz, Österreich.

Wiener Medizinische Wochenschrift (1946)
|July 23, 2013
PubMed
Summary
This summary is machine-generated.

Alcohol

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Area of Science:

  • Neuroscience and Behavioral Science
  • Addiction Research

Background:

  • Complex relationship between alcohol consumption, cognitive function, and aging processes (social and biological).
  • Acute alcohol intoxication causes reversible cognitive deficits, particularly in memory.
  • Chronic alcohol intake leads to persistent, severe cognitive impairments, especially in executive functions.

Purpose of the Study:

  • To explore the impact of chronic alcohol consumption on cognitive functions.
  • To detail executive function deficits associated with alcohol addiction.
  • To investigate gender-specific differences in alcohol-related cognitive dysfunction.

Main Methods:

  • Review of previous studies on alcohol consumption and cognition.
  • Analysis of cognitive deficits during acute intoxication versus chronic alcoholism.
  • Examination of gender-specific vulnerabilities in alcohol use disorder.

Main Results:

  • Chronic alcohol use results in severe, lasting cognitive impairments, particularly frontal executive deficits (problem-solving, planning, working memory).
  • Female alcoholics exhibit heightened vulnerability to cognitive dysfunction and brain atrophy.
  • Cognitive deficits from acute intoxication are reversible, unlike those from chronic abuse.

Conclusions:

  • Chronic alcohol consumption severely impacts executive functions and working memory.
  • Gender plays a significant role, with women being more susceptible to cognitive decline.
  • Understanding these deficits is crucial for managing alcohol use disorder and its neurological consequences.