- 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.
- Memory for anything new becomes impossible
- Although old memories may still be retrievable.
- 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
- Most people cannot remember events that occurred before age 2 or 3.
- It is most likely due to the implicit nature of infant memory.