Bastin Christine
a GIGA-Cyclotron Research Centre-in vivo imaging , Liège University , Liège , Belgium.
Memory. 2018 Oct;26(9):1181-1190. doi: 10.1080/09658211.2017.1421228. Epub 2017 Dec 28.
An age-related associative deficit has been described in visual short-term binding memory tasks. However, separate studies have suggested that ageing disrupts relational binding (to associate distinct items or item and context) more than conjunctive binding (to integrate features within an object). The current study directly compared relational and conjunctive binding with a short-term memory task for object-colour associations in 30 young and 30 older adults. Participants studied a number of object-colour associations corresponding to their individual object span level in a relational task in which objects were associated to colour patches and a conjunctive task where colour was integrated into the object. Memory for individual items and for associations was tested with a recognition memory test. Evidence for an age-related associative deficit was observed in the relational binding task, but not in the conjunctive binding task. This differential impact of ageing on relational and conjunctive short-term binding is discussed by reference to two underlying age-related cognitive difficulties: diminished hippocampally dependent binding and attentional resources.
在视觉短期联结记忆任务中，已描述了一种与年龄相关的联想缺陷。然而，单独的研究表明，衰老对关系性联结（将不同项目或项目与情境相联系）的破坏比对联合性联结（将物体内的特征整合在一起）的破坏更大。本研究针对30名年轻人和30名老年人，通过一项物体-颜色联想的短期记忆任务，直接比较了关系性联结和联合性联结。在关系性任务中，参与者学习了一些与他们各自的物体跨度水平相对应的物体-颜色联想，在该任务中物体与色块相关联；在联合性任务中，颜色被整合到物体中。通过识别记忆测试对单个项目和联想的记忆进行了测试。在关系性联结任务中观察到了与年龄相关的联想缺陷的证据，但在联合性联结任务中未观察到。通过参考两个与年龄相关的潜在认知困难：海马依赖性联结减少和注意力资源，讨论了衰老对关系性和联合性短期联结的这种差异影响。
