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Related Concept Videos

Amnesia01:13

Amnesia

Amnesia is a condition marked by long-term memory loss, which impairs the ability to recall past events or create new memories.
The severity and duration of memory loss vary depending on the type and underlying cause. Amnesia is classified into two main types: retrograde and anterograde.
Retrograde amnesia is marked by the loss of memories formed before the onset of the condition. Patients may recall distant past events but often forget those occurring shortly before the incident.
Anterograde...
Post-traumatic Stress Disorder01:27

Post-traumatic Stress Disorder

Post-traumatic stress disorder (PTSD) is a psychiatric condition that arises following exposure to traumatic events such as natural disasters, forced displacement, or severe accidents. It significantly impairs individuals' ability to cope with daily activities and disrupts their emotional and psychological equilibrium.
Symptoms and Behavioral Manifestations
A spectrum of distressing symptoms characterizes PTSD. Recurrent flashbacks, where individuals involuntarily relive traumatic events, are a...
Traumatic Memory01:20

Traumatic Memory

Emotionally traumatic events often lead to memories that are exceptionally vivid and enduring, sometimes persisting with remarkable clarity throughout an individual's life. A classic example of this phenomenon is a person who survives a car accident. Even years later, they may recall every detail of the event with startling accuracy — the screeching of the tires, the jarring impact, and the acrid smell of burning rubber. Such vividness contrasts sharply with how an individual remembers mundane...
Dissociative Amnesia01:21

Dissociative Amnesia

Dissociative amnesia is a complex psychological condition that manifests as an inability to recall personal information, often tied to traumatic or stressful events. Unlike general amnesia, individuals with this condition retain the ability to perform routine activities and procedural tasks, such as operating a phone or navigating public transportation, yet experience profound gaps in autobiographical memory. These lapses may encompass significant life events, such as suicide attempts or...
CNS Depressants: Alcohol and Nicotine01:27

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...
Traumatic Brain Injury l: Introduction01:28

Traumatic Brain Injury l: Introduction

DefinitionTraumatic brain injury, or TBI, is a disturbance of normal brain function induced by an external mechanical force, such as a direct blow to the head or a penetrating injury. It can affect both brain structure and function, producing a wide range of clinical outcomes. TBI is a heterogeneous condition, meaning its effects may differ based on the type, location, and severity of the injury.Basis of ClassificationTBI is classified based on severity, injury mechanism, or pathophysiology. In...

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Related Experiment Video

Updated: May 29, 2026

Chronic Intermittent Ethanol Vapor Exposure Paired with Two-Bottle Choice to Model Alcohol Use Disorder
05:12

Chronic Intermittent Ethanol Vapor Exposure Paired with Two-Bottle Choice to Model Alcohol Use Disorder

Published on: June 23, 2023

Post traumatic amnesia and alcohol dependence.

S Sabhesan1, M Natarajan

  • 1ICMR Project on Adjustmental problems of head injured patients, Department of Neurosurgery. Madurai Medical College, Madurai.

Indian Journal of Psychiatry
|September 20, 2011
PubMed
Summary
This summary is machine-generated.

Alcohol dependence significantly prolongs post-traumatic amnesia (PTA) following head injury. This study found longer PTA in alcohol-dependent individuals compared to matched controls, suggesting underlying brain changes.

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

Area of Science:

  • Neuroscience
  • Traumatic Brain Injury Research
  • Alcoholism Studies

Background:

  • Alcohol dependence is a prevalent condition with known neurological effects.
  • Head injuries can result in cognitive impairments, including post-traumatic amnesia (PTA).
  • The interaction between pre-existing alcohol dependence and head injury outcomes requires further investigation.

Purpose of the Study:

  • To investigate the impact of alcohol dependence on the duration of post-traumatic amnesia (PTA) after head injury.
  • To compare PTA duration in alcohol-dependent individuals versus non-alcoholic controls matched for injury severity and age.
  • To explore potential pathophysiological explanations for observed differences in PTA.

Main Methods:

  • Retrospective analysis of head injury patient data.
  • Comparison of PTA duration between alcohol-dependent patients and age- and injury-severity-matched controls.
  • Review of existing literature on the neurobiological effects of chronic alcohol use.

Main Results:

  • Alcohol dependence was associated with significantly prolonged post-traumatic amnesia (PTA).
  • Matched controls exhibited shorter PTA durations compared to the alcohol-dependent group.
  • The findings indicate a significant exacerbation of cognitive recovery time in individuals with prior alcohol dependence.

Conclusions:

  • Pre-existing alcohol dependence is a critical factor that prolongs PTA after head injury.
  • Pathophysiological changes in the alcoholic brain likely contribute to delayed cognitive recovery.
  • These findings highlight the importance of considering alcohol use history in managing and predicting outcomes for traumatic brain injury patients.