Divided attention at retrieval does not influence neural correlates of recollection in young or older adults.
Divided attention at retrieval does not influence neural correlates of recollection in young or older adults.
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DOI：
10.1016/j.neuroimage.2022.118918
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发表时间：
2022-04-15
期刊：
影响因子：
5.7
通讯作者：
Rugg MD
中科院分区：
文献类型：
--
作者：
Hou M;Horne ED;de Chastelaine M;Rugg MD
与年龄相关的情景记忆衰退部分归因于老年人领域一般处理资源的减少。在本研究中，我们研究了分散注意力（DA）对年轻人和老年人回忆的神经关联的影响。这种操作被认为会进一步消耗老年人已经有限的加工资源。参与者在进行单音和双音（音调检测）任务条件下的联想识别测试时进行了fMRI扫描。回忆效应被操作为，被正确认可为“完整”的测试对比被正确或错误认可为“重新排列”的测试对引发的BOLD活动更大。在老年人中发现了多巴胺对联想识别性能的有害影响，但在年轻人中没有发现。在任何年龄组中，单任务和双任务（音调检测）的回忆效应的大小没有差异。在不同的任务条件下，年龄不变的回忆效应在大多数核心回忆网络成员中都很明显。然而，尽管年轻人在左角回表现出强大的回忆效应，但在两种任务条件下，老年人的角回效应都没有被检测到。除了这一结果可能的例外，研究结果表明，无论是年轻人还是老年人，DA都不会影响支持联想信息检索和表征的过程，并且与先前的行为研究结果一致，表明情景检索操作几乎不受DA的影响。
Age-related decline in episodic memory has been partially attributed to older adults’ reduced domain general processing resources. In the present study, we examined the effects of divided attention (DA) - a manipulation assumed to further deplete the already limited processing resources of older adults - on the neural correlates of recollection in young and older adults. Participants underwent fMRI scanning while they performed an associative recognition test in single and dual (tone detection) task conditions. Recollection effects were operationalized as greater BOLD activity elicited by test pairs correctly endorsed as ‘intact’ than pairs correctly or incorrectly endorsed as ‘rearranged’. Detrimental effects of DA on associative recognition performance were identified in older but not young adults. The magnitudes of recollection effects did not differ between the single and dual (tone detection) tasks in either age group. Across the task conditions, age-invariant recollection effects were evident in most members of the core recollection network. However, while young adults demonstrated robust recollection effects in left angular gyrus, angular gyrus effects were undetectable in the older adults in either task condition. With the possible exception of this result, the findings suggest that DA did not influence processes supporting the retrieval and representation of associative information in either young or older adults, and converge with prior behavioral findings to suggest that episodic retrieval operations are little affected by DA.
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影响因子：
5.7
作者：
Abdulrahman H;Henson RN
通讯作者：
Henson RN
DOI：
10.1523/jneurosci.1239-18.2018
发表时间：
2018-12-05
期刊：
The Journal of neuroscience : the official journal of the Society for Neuroscience
影响因子：
--
作者：
Bonnici HM;Cheke LG;Green DAE;FitzGerald THMB;Simons JS
通讯作者：
Simons JS
DOI：
10.1037/0278-7393.26.6.1744
发表时间：
2000-11-01
影响因子：
2.6
作者：
Craik, FIM;Naveh-Benjamin, M;Anderson, ND
通讯作者：
Anderson, ND
影响因子：
4.1
作者：
BADDELEY, A;LEWIS, V;THOMSON, N
通讯作者：
THOMSON, N
影响因子：
4.1
作者：
Craik, FIM;Govoni, R;Anderson, ND
通讯作者：
Anderson, ND