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@ARTICLE{Vieweg:137830,
author = {Vieweg, Paula and Stangl, Matthias and Howard, Lorelei R
and Wolbers, Thomas},
title = {{C}hanges in pattern completion--a key mechanism to explain
age-related recognition memory deficits?},
journal = {Cortex},
volume = {64},
issn = {0010-9452},
address = {New York, NY},
publisher = {Elsevier},
reportid = {DZNE-2020-04152},
pages = {343-351},
year = {2015},
abstract = {Accurate memory retrieval from partial or degraded input
requires the reactivation of memory traces, a hippocampal
mechanism termed pattern completion. Age-related changes in
hippocampal integrity have been hypothesized to shift the
balance of memory processes in favor of the retrieval of
already stored information (pattern completion), to the
detriment of encoding new events (pattern separation). Using
a novel behavioral paradigm, we investigated the impact of
cognitive aging (1) on recognition performance across
different levels of stimulus completeness, and (2) on
potential response biases. Participants were required to
identify previously learned scenes among new ones.
Additionally, all stimuli were presented in gradually masked
versions to alter stimulus completeness. Both young and
older adults performed increasingly poorly as the scenes
became less complete, and this decline in performance was
more pronounced in elderly participants indicative of a
pattern completion deficit. Intriguingly, when novel scenes
were shown, only the older adults showed an increased
tendency to identify these as familiar scenes. In line with
theoretical models, we argue that this reflects an
age-related bias towards pattern completion.},
keywords = {Adult / Aged / Aging: physiology / Attention: physiology /
Female / Humans / Male / Memory: physiology / Memory
Disorders: physiopathology / Mental Recall: physiology /
Middle Aged / Neuropsychological Tests / Photic Stimulation
/ Reaction Time: physiology / Young Adult},
cin = {AG Wolbers},
ddc = {610},
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:25597525},
pmc = {pmc:PMC4884644},
doi = {10.1016/j.cortex.2014.12.007},
url = {https://pub.dzne.de/record/137830},
}