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衰老会削弱在现实场景中对意外物体的记忆优势。

Aging attenuates the memory advantage for unexpected objects in real-world scenes.

作者信息

Klever Lena, Islam Jasmin, Võ Melissa Le-Hoa, Billino Jutta

机构信息

Experimental Psychology, Justus Liebig University Giessen, Germany.

Center for Mind, Brain, And Behavior (CMBB), University of Marburg and Justus Liebig University Giessen, Germany.

出版信息

Heliyon. 2023 Sep 16;9(9):e20241. doi: 10.1016/j.heliyon.2023.e20241. eCollection 2023 Sep.

Abstract

Across the adult lifespan memory processes are subject to pronounced changes. Prior knowledge and expectations might critically shape functional differences; however, corresponding findings have remained ambiguous so far. Here, we chose a tailored approach to scrutinize how schema (in-)congruencies affect older and younger adults' memory for objects embedded in real-world scenes, a scenario close to everyday life memory demands. A sample of 23 older (52-81 years) and 23 younger adults (18-38 years) freely viewed 60 photographs of scenes in which target objects were included that were either congruent or incongruent with the given context information. After a delay, recognition performance for those objects was determined. In addition, recognized objects had to be matched to the scene context in which they were previously presented. While we found schema violations beneficial for object recognition across age groups, the advantage was significantly less pronounced in older adults. We moreover observed an age-related congruency bias for matching objects to their original scene context. Our findings support a critical role of predictive processes for age-related memory differences and indicate enhanced weighting of predictions with age. We suggest that recent predictive processing theories provide a particularly useful framework to elaborate on age-related functional vulnerabilities as well as stability.

摘要

在整个成年期,记忆过程会发生显著变化。先验知识和预期可能会对功能差异产生关键影响;然而,到目前为止,相应的研究结果仍不明确。在这里,我们采用了一种定制的方法,以研究图式(不)一致性如何影响老年人和年轻人对嵌入现实世界场景中的物体的记忆,这是一种接近日常生活记忆需求的情景。23名老年人(52-81岁)和23名年轻人(18-38岁)的样本自由观看了60张包含目标物体的场景照片,这些目标物体与给定的上下文信息要么一致,要么不一致。经过一段时间的延迟后,确定对这些物体的识别表现。此外,被识别的物体必须与它们之前呈现时的场景上下文相匹配。虽然我们发现图式违反对各年龄组的物体识别都有好处,但在老年人中这种优势明显不那么显著。我们还观察到在将物体与它们原来的场景上下文进行匹配时存在与年龄相关的一致性偏差。我们的研究结果支持了预测过程在与年龄相关的记忆差异中的关键作用,并表明随着年龄的增长,预测的权重增加。我们建议,最近的预测加工理论为阐述与年龄相关的功能脆弱性以及稳定性提供了一个特别有用的框架。

https://cdn.ncbi.nlm.nih.gov/pmc/blobs/7046/10560015/c9c4e560868b/gr1.jpg

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