title: Representations of recent and remote autobiographical memories in hippocampal subfields.
abstract: The hippocampus has long been implicated in supporting autobiographical memories, but little is known about how they are instantiated in hippocampal subfields. Using high-resolution functional magnetic resonance imaging (fMRI) combined with multivoxel pattern analysis we found that it was possible to detect representations of specific autobiographical memories in individual hippocampal subfields. Moreover, while subfields in the anterior hippocampus contained information about both recent (2 weeks old) and remote (10 years old) autobiographical memories, posterior CA3 and DG only contained information about the remote memories. Thus, the hippocampal subfields are differentially involved in the representation of recent and remote autobiographical memories during vivid recall.
authors.affiliation: Wellcome Trust Centre for Neuroimaging, Institute of Neurology, University College London, London, United Kingdom.
authors.forename: Heidi M
authors.initials: HM
authors.lastname: Bonnici
authors.forename: Martin J
authors.initials: MJ
authors.lastname: Chadwick
authors.forename: Eleanor A
authors.initials: EA
authors.lastname: Maguire
mesh_terms: D000328:Adult; D001931:Brain Mapping / Q000295:instrumentation / Q000379:methods*; D056654:CA3 Region, Hippocampal / Q000502:physiology; D018891:Dentate Gyrus / Q000502:physiology; D005260:Female; D006624:Hippocampus / Q000502:physiology*; D006801:Humans; D008279:Magnetic Resonance Imaging; D008297:Male; D061212:Memory, Episodic; D011939:Mental Recall / Q000502:physiology*; D011897:Random Allocation; D013997:Time Factors; D055815:Young Adult
keywords: MVPA; autobiographical; consolidation; fMRI; hippocampus; subfields