Abstract:
:The role of the hippocampus in retrograde amnesia remains controversial and poorly understood. Two cases are reported of discrete bilateral hippocampal damage, one of which was a rare case of limbic encephalitis secondary to the human herpes virus 6. Detailed memory testing showed marked anterograde memory impairment, but only mild, temporally-limited retrograde amnesia that covered a period of several years in both autobiographical and factual knowledge domains. The absence of extensive retrograde amnesia in these two cases points to a time-limited role for the hippocampus in the retrieval of retrograde memories, and suggests that entorhinal, perirhinal, parahippocampal, or neocortical areas of the temporal lobe may be more critical than the hippocampus proper for long-term retrograde memory functioning. Our findings offer general support to theories of memory consolidation that propose a gradual transfer of memory from hippocampal to neocortical dependency.
journal_name
Hippocampusjournal_title
Hippocampusauthors
Kapur N,Brooks DJdoi
10.1002/(SICI)1098-1063(1999)9:3<247::AID-HIPO5>3.keywords:
subject
Has Abstractpub_date
1999-01-01 00:00:00pages
247-54issue
3eissn
1050-9631issn
1098-1063journal_volume
9pub_type
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