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Psychology Dictionary >> Amnesia, Amnesic Patients
Amnesia
A broad inability to remember events within a certain category, due in many cases to brain damage.
Patients with severe amnesia due to insult or injury to the brain cannot consciously or explicity remember events that happened only a few minutes or even seconds ago. Still, they have an unconscious or implicit memory for these events which can be revealed through subtle tests of retention.
In short, the problem with amnesia (as well as with prosopagnosia) is not that the patients do not know something but that they do not know that they know.
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