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000137830 037__ $$aDZNE-2020-04152
000137830 041__ $$aEnglish
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000137830 1001_ $$0P:(DE-2719)2810529$$aVieweg, Paula$$b0$$eFirst author$$udzne
000137830 245__ $$aChanges in pattern completion--a key mechanism to explain age-related recognition memory deficits?
000137830 260__ $$aNew York, NY$$bElsevier$$c2015
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000137830 520__ $$aAccurate 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.
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000137830 650_2 $$2MeSH$$aAdult
000137830 650_2 $$2MeSH$$aAged
000137830 650_2 $$2MeSH$$aAging: physiology
000137830 650_2 $$2MeSH$$aAttention: physiology
000137830 650_2 $$2MeSH$$aFemale
000137830 650_2 $$2MeSH$$aHumans
000137830 650_2 $$2MeSH$$aMale
000137830 650_2 $$2MeSH$$aMemory: physiology
000137830 650_2 $$2MeSH$$aMemory Disorders: physiopathology
000137830 650_2 $$2MeSH$$aMental Recall: physiology
000137830 650_2 $$2MeSH$$aMiddle Aged
000137830 650_2 $$2MeSH$$aNeuropsychological Tests
000137830 650_2 $$2MeSH$$aPhotic Stimulation
000137830 650_2 $$2MeSH$$aReaction Time: physiology
000137830 650_2 $$2MeSH$$aYoung Adult
000137830 7001_ $$0P:(DE-2719)2810620$$aStangl, Matthias$$b1$$udzne
000137830 7001_ $$0P:(DE-2719)2810709$$aHoward, Lorelei R$$b2$$udzne
000137830 7001_ $$0P:(DE-2719)2810583$$aWolbers, Thomas$$b3$$eLast author$$udzne
000137830 77318 $$2Crossref$$3journal-article$$a10.1016/j.cortex.2014.12.007$$b : Elsevier BV, 2015-03-01$$p343-351$$tCortex$$v64$$x0010-9452$$y2015
000137830 773__ $$0PERI:(DE-600)2080335-7$$a10.1016/j.cortex.2014.12.007$$gVol. 64, p. 343 - 351$$p343-351$$q64<343 - 351$$tCortex$$v64$$x0010-9452$$y2015
000137830 8567_ $$2Pubmed Central$$uhttp://www.ncbi.nlm.nih.gov/pmc/articles/PMC4884644
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