The effects of aging on ERP correlates of source memory retrieval for self-referential information

Dulas, Michael R.; Newsome, Rachel N.; Duarte, Audrey

doi:10.1016/j.brainres.2010.12.087

Cited by 63 publications

(53 citation statements)

References 85 publications

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“…In accordance with previous ERP studies of source memory (Dulas, Newsome, & Duarte, 2011;Eppinger, Herbert, & Kray, 2010;Hayama et al, 2008;Li, Morcom, & Rugg, 2004;Swick, Senkfor, & Van Petten., 2006), our ERP analyses focused on the old/new effects between the source correct and correct rejection trials. The mean number of trials contributing to the grand average ERPs consisted of young-unitized condition: (source correct (86) and correct rejection (47)); young-non-unitized condition: (source correct (84) and correct rejection (44)); older-unitized condition: (source correct (73) and correct rejection (46)); older-non-unitized condition: (source correct (71) and correct rejection (48)).…”

Section: 5eeg Recording and Processingsupporting

confidence: 91%

Unitization improves source memory in older adults: An event-related potential study

Zheng

Xiao

et al. 2016

Neuropsychologia

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Section: 5eeg Recording and Processingsupporting

confidence: 91%

Unitization improves source memory in older adults: An event-related potential study

Zheng

Xiao

et al. 2016

Neuropsychologia

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“…Dorsal medial prefrontal cortex was implicated across the age groups for accurate subsequent source memory (Leshikar & Duarte, 2013). With ERP, an earlier emerging old-new component supports self-referential encoding across both age groups (Dulas, Newsome, & Duarte, 2011). …”

Section: Introductionmentioning

confidence: 99%

Age differences in self-referencing: Evidence for common and distinct encoding strategies

et al. 2015

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Although engagement of medial prefrontal cortex (MPFC) underlies self-referencing of information for younger and older adults, the region has not consistently been implicated across age groups for the encoding of self-referenced information. We sought to determine whether making judgments about others as well as the self influenced findings in the previous study. During an fMRI session, younger and older adults encoded adjectives using only a self-reference task. For items later remembered compared to those later forgotten, both age groups robustly recruited medial prefrontal cortex, indicating common neural regions support encoding across younger and older adults when participants make only self-reference judgments. Focal age differences emerged in regions related to emotional processing and cognitive control, though these differences are more limited than in tasks in which judgments also are made about others. We conclude that making judgments about another person differently affects the ways that younger and older adults make judgments about the self, with results of a follow-up behavioral study supporting this interpretation.

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“…Then, if the object was judged to be "old," they decided if the object was presented in the same color as it was during study, or if it was presented in a different color. Critically, we also included a "Donʼt Know" response option for both questions to reduce dilution of source memory accuracy estimates and fMRI effects via guessing, as has been implemented in prior studies Dulas, Newsome, & Duarte, 2011;Gottlieb, Uncapher, & Rugg, 2010;Duarte, Henson, Knight, Emery, & Graham, 2009;Duarte, Henson, & Graham, 2008;Morcom, Li, & Rugg, 2007;Smith, Dolan, & Rugg, 2004). In addition, we attempted to match performance between age groups by halving the memory load for older adults, as we have successfully done in a previous study (Dulas & Duarte, 2013).…”

Section: Introductionmentioning

confidence: 99%

Aging Affects the Interaction between Attentional Control and Source Memory: An fMRI Study

Dulas¹,

Duarte²

2014

Journal of Cognitive Neuroscience

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Age-related source memory impairments may be due, at least in part, to deficits in executive processes mediated by the PFC at both study and test. Behavioral work suggests that providing environmental support at encoding, such as directing attention toward item-source associations, may improve source memory and reduce age-related deficits in the recruitment of these executive processes. The present fMRI study investigated the effects of directed attention and aging on source memory encoding and retrieval. At study, participants were shown pictures of objects. They were either asked to attend to the objects and their color (source) or to their size. At test, participants determined if objects were seen before, and if so, whether they were the same color as previously. Behavioral results showed that direction of attention improved source memory for both groups; however, age-related deficits persisted. fMRI results revealed that, across groups, direction of attention facilitated medial temporal lobe-mediated contextual binding processes during study and attenuated right PFC postretrieval monitoring effects at test. However, persistent age-related source memory deficits may be related to increased recruitment of medial anterior PFC during encoding, indicative of self-referential processing, as well as underrecruitment of lateral anterior PFC-mediated relational processes. Taken together, this study suggests that, even when supported, older adults may fail to selectively encode goal-relevant contextual details supporting source memory performance.

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The effects of aging on ERP correlates of source memory retrieval for self-referential information

Cited by 63 publications

References 85 publications

Unitization improves source memory in older adults: An event-related potential study

Unitization improves source memory in older adults: An event-related potential study

Age differences in self-referencing: Evidence for common and distinct encoding strategies

Aging Affects the Interaction between Attentional Control and Source Memory: An fMRI Study

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