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Related Concept Videos

Amnesia01:13

Amnesia

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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...
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Dissociative Amnesia01:21

Dissociative Amnesia

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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...
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Higher Mental Functions of Brain: Learning and Memory01:26

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Memory is one of the most vital higher mental functions of the brain. Memory is closely related to learning because it enables us to retain information and experiences from our past to use them in our present life. It also helps us to remember facts, events, and skills, such as riding a bike or swimming. There are two types of memory — declarative memory, which involves memorizing facts or events, and procedural memory, which enables us to remember how to do something like writing or...
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Traumatic Memory01:20

Traumatic Memory

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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...
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Forgetting01:21

Forgetting

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Forgetting is an intrinsic aspect of human memory, characterized by the gradual loss or inaccessibility of information over time. Hermann Ebbinghaus, a pioneering psychologist, extensively studied this phenomenon and formulated the forgetting curve. This curve illustrates that memory loss occurs rapidly immediately after learning and then decelerates over time. Several mechanisms contribute to forgetting, including encoding failure, storage decay, retrieval failure, and interference.
Encoding...
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Dissociative Disorders01:27

Dissociative Disorders

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Dissociative disorders represent complex psychological conditions characterized by disruptions in consciousness, memory, identity, or perception. These disruptions cause individuals to experience a disconnection from their thoughts, emotions, and memories. The phenomenon is not merely an occasional lapse in attention but a profound alteration in mental functioning that can severely impact daily life.
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Transient Global Amnesia.

David Sealy1, Robert J Tiller1, Katherine Johnson1

  • 1Medical University of South Carolina, Greenwood, SC, USA.

American Family Physician
|January 14, 2022
PubMed
Summary
This summary is machine-generated.

Transient global amnesia (TGA) is a temporary memory loss condition, often triggered by stress. While usually resolving within 24 hours, TGA may be linked to migraines and heart conditions.

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Area of Science:

  • Neurology
  • Neuroscience

Background:

  • Transient global amnesia (TGA) is a clinical syndrome characterized by temporary memory loss.
  • It primarily affects individuals over 50, impairing short-term memory formation.
  • Symptoms include disorientation and repetitive questioning, often accompanied by physical discomforts.

Purpose of the Study:

  • To summarize the clinical presentation, potential causes, and diagnostic considerations of TGA.
  • To review the current understanding of TGA pathophysiology and prognosis.
  • To highlight recent associations between TGA and other medical conditions.

Main Methods:

  • Clinical case review and literature synthesis.
  • Analysis of diagnostic criteria and imaging findings.
  • Examination of epidemiological data on recurrence and associated conditions.

Main Results:

  • TGA is a self-limited condition resolving within 24 hours with no specific treatment.
  • Precipitating factors include physical or psychological stress.
  • Recurrence rates range from 2.9% to 23.8% with potential links to migraines and takotsubo cardiomyopathy.

Conclusions:

  • TGA diagnosis is primarily clinical, though MRI may aid in evaluation.
  • No increased risk of cerebrovascular events is observed post-TGA.
  • Further research is needed to clarify TGA's association with seizures and dementia.