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Related Concept Videos

Amnesia01:13

Amnesia

619
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...
619
Dissociative Amnesia01:21

Dissociative Amnesia

691
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

Higher Mental Functions of Brain: Learning and Memory

2.2K
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...
2.2K
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.
Dissociative Fugue
A hallmark feature of dissociative disorders is the dissociative fugue...
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Traumatic Memory01:20

Traumatic Memory

619
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...
619
False Memories01:18

False Memories

514
False memories represent a cognitive distortion in which individuals recall events that did not happen, or remember them in an altered form. This phenomenon highlights the brain's constructive nature in processing and recalling memories, emphasizing that memory is not a perfect representation of past events but rather a dynamic reconstruction influenced by various factors.
One primary source of false memories is misattribution, where individuals incorrectly associate external information...
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Transcranial Direct Current Stimulation tDCS for Memory Enhancement
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Transient global amnesia: current perspectives.

David R Spiegel1, Justin Smith1, Ryan R Wade1

  • 1Department of Psychiatry and Behavioral Sciences, Eastern Virginia Medical School, Norfolk, VA, USA.

Neuropsychiatric Disease and Treatment
|November 11, 2017
PubMed
Summary
This summary is machine-generated.

Transient global amnesia (TGA) involves sudden memory loss and impaired executive functions. Research highlights CA1 neuron vulnerability to metabolic stress in TGA pathophysiology.

Keywords:
migrainespsychiatrictransient global amnesiavascular

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Area of Science:

  • Neurology
  • Neuroscience
  • Clinical Medicine

Background:

  • Transient global amnesia (TGA) is a neurological disorder characterized by acute, temporary memory deficits.
  • While potential triggers like migraines and ischemia are noted, the exact causes remain unclear.
  • Executive functions are also affected in TGA patients.

Purpose of the Study:

  • To review the clinical features of TGA.
  • To discuss recent advancements in TGA imaging and epidemiology.
  • To explore the cellular mechanisms underlying TGA, focusing on hippocampal function.

Main Methods:

  • Literature review of clinical aspects of TGA.
  • Analysis of recent neuroimaging findings in TGA.
  • Examination of clinical-epidemiological data and cellular mechanisms.

Main Results:

  • TGA presents with significant anterograde and retrograde memory loss, alongside executive dysfunction.
  • Vulnerability of CA1 neurons to metabolic stress is implicated in TGA's pathophysiology.
  • New imaging and epidemiological data offer insights into TGA's phenotype and anatomy.

Conclusions:

  • Understanding TGA requires integrating clinical, imaging, and cellular data.
  • The role of CA1 neuron vulnerability provides a potential mechanistic explanation for TGA.
  • Further research into triggers and cellular pathways is crucial for TGA management.