Occurrence of Amnesia. Psychology

Retrograde Amnesia

  • Memory for the past (prior to the injury) is lost
  • Can be a loss of only minutes or a loss of several years.
  • Electroconvulsive therapy (ECT) can cause this by disrupting consolidation.

Anterograde Amnesia

  • Memory for anything new becomes impossible
  • Although old memories may still be retrievable.

Alzheimer's Disease

  • The primary memory difficulty here is anterograde amnesia
  • Although retrograde amnesia can also occur as the disease progresses.
  • It has multiple causes, many of which are not yet identified.
  • Various drugs are in use or in development, with hopes of slowing/stopping the progression of Alzheimer's disease

Infantile Amnesia

  • Most people cannot remember events that occurred before age 2 or 3.
  • It is most likely due to the implicit nature of infant memory.
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