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@ARTICLE{Baker:138831,
author = {Baker, Stevenson and Vieweg, Paula and Gao, Fuqiang and
Gilboa, Asaf and Wolbers, Thomas and Black, Sandra E and
Rosenbaum, R Shayna},
title = {{T}he {H}uman {D}entate {G}yrus {P}lays a {N}ecessary
{R}ole in {D}iscriminating {N}ew {M}emories.},
journal = {Current biology},
volume = {26},
number = {19},
issn = {0960-9822},
address = {London},
publisher = {Current Biology Ltd.},
reportid = {DZNE-2020-05153},
pages = {2629-2634},
year = {2016},
abstract = {Our day-to-day experiences are often similar to one
another, occurring in the same place at the same time of
day, with common people and objects, and with a shared
purpose. Humans have an episodic memory to represent unique,
personal events that are rich in detail [1]. For this to
occur, at least two basic neural mechanisms are required:
one to orthogonalize or 'separate' overlapping input
patterns at encoding and another to reinstate or 'complete'
memories from partial cues at retrieval [2-6]. To what
extent do these purported 'pattern separation' and 'pattern
completion' mechanisms rely on distinct subfields of the
hippocampus [6]? Computational models [4-6] and lesion and
genetic studies in rodents [7-12] largely point to the
dentate gyrus as responsible for pattern separation and the
CA3 and CA1 subfields for pattern completion (but see
[13-16]). In high-resolution fMRI studies of humans,
behavioral discrimination and completion tasks designed to
approximate pattern separation and pattern completion,
respectively, elicit the predicted pattern of activity in
the dentate gyrus and CA3/CA1 [17-21]. Likewise, impaired
behavioral discrimination has been demonstrated in
individuals with hippocampal lesions [22, 23], but the
lesions most likely encompass other subfields. Examination
of these processes in individuals with selective lesions to
hippocampal subfields is needed to infer causation [19].
Here, we report the rare case of BL, a 54-year-old man with
bilateral ischemic lesions to the hippocampus [24] primarily
affecting the dentate gyrus. Studying BL provides the unique
opportunity to directly evaluate theories of hippocampal
function that assign the dentate gyrus a specific role in
discriminating old from new memories.},
keywords = {Dentate Gyrus: pathology / Dentate Gyrus: physiology /
Humans / Male / Memory Disorders: physiopathology / Memory,
Episodic / Middle Aged},
cin = {AG Wolbers},
ddc = {570},
cid = {I:(DE-2719)1310002},
pnm = {344 - Clinical and Health Care Research (POF3-344)},
pid = {G:(DE-HGF)POF3-344},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:27666968},
doi = {10.1016/j.cub.2016.07.081},
url = {https://pub.dzne.de/record/138831},
}