Short-term memory: includes sensory memory and working memory
Long-term memory: includes declarative (explicit) memory and non-declarative (implicit) memory
Retrograde amnesia: loss of memories for events prior to damage
Anterograde amnesia: loss of ability to form new memories
Evidence from amnesiac patients: short-term memory is spared, whilst long-term is impaired. Also, declarative memory is impaired whilst non-declarative memory is spared.
Patient "HM": bilaterally severed the hippocampus for epilepsy treatment. He had long-term memory problems - severe anterograde amnesia and some retrograde amnesia for events prior to surgery. His short-term memory was relatively spared. His declarative memory was impaired, he could not learn meanings of new words, but could learn a new skill (which is non-declarative).
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