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Definition of Retrograde amnesia

Retrograde amnesia: Amnesia in which the lack of memory relates to events that occurred before a traumatic event. Retrograde amnesia is in contrast to antegrade amnesia in which the lack of memory relates to events that occurred after a traumatic event.

Source: MedTerms™ Medical Dictionary
http://www.medterms.com/script/main/art.asp?articlekey=11959
Last Editorial Review: 6/5/2004

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