Age Differences in the Processing of Context Information

The dual mechanisms of control theory (DMC; Braver & Barch, 2002 ) assumes that age-related changes in the temporal structure of context processing underlie age differences in numerous cognitive control tasks. Younger adults usually exhibit a proactive control mode, characterized by cue-related context updating, while older adults show a reactive control mode, updating information when interference is detected. This study aimed at determining whether age differences in electrophysiological correlates of context updating in a pro-and reactive manner are independent of individual differences in task performance. To this end, younger and older adults were split into four groups according to their updating efficiency in behavioral data. Nineteen younger and 18 older adults completed a modified AX-Continuous-Performance Task ( Lenartowicz, Escobedo-Quiroz, & Cohen, 2010 ) in which correct responses to probes were either dependent (c-dep) or independent (c-indep) on a preceding contextual cue. Analysis of the behavioral data showed no differences in context updating when performance was matched, that is, between low performing younger and high performing older adults. However, low performing younger adults showed larger cue-locked parietal P3b amplitudes on c-dep than c-indep trials, indicating c-dep trials to require context updating to a larger extent, while high performing older adults exhibited a specific control strategy and continuously updated context information, as reflected in comparable P3b amplitudes on c-dep and c-indep trials. The persistent age effect in the P3b when controlling for performance differences suggests context updating to be fundamental to cognitive aging. High performing in contrast to low performing older adults also showed a larger negative N450 to ambiguous probes on c-dep trials associated with conflict detection. According to the DMC, this finding suggests late conflict detection at the time interference is detected, indicative of a reactive control style particular in high performing elderly.

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Effects of Age Differences in Memory Formation on Neural Mechanisms of Consolidation and Retrieval

10.31234/osf.io/84nve ◽

2020 ◽

Author(s):

Myriam C. Sander ◽

Yana Fandakova ◽

Markus Werkle-Bergner

Keyword(s):

Older Adults ◽

Episodic Memory ◽

Age Differences ◽

Cognitive Aging ◽

Younger Adults ◽

Memory Decline ◽

Memory Processing ◽

Memory Impairments ◽

Age Related ◽

Memory Network

Episodic memory decline is a hallmark of cognitive aging and a multifaceted phenomenon. We review studies that target age differences across different memory processing stages, i.e., from encoding to retrieval. The available evidence cumulates in the proposition that older adults form memories of lower quality than younger adults, which has negative downstream consequences for later processing stages. We argue that low memory quality in combination with age-related neural decline of key regions of the episodic memory network puts older adults in a double jeopardy situation that finally results in broader memory impairments in older compared to younger adults.

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Neural Recruitment and Cognitive Aging: Two Hemispheres Are Better Than One, Especially as You Age

Psychological Science ◽

10.1111/1467-9280.00195 ◽

1999 ◽

Vol 10 (6) ◽

pp. 494-500 ◽

Cited By ~ 127

Author(s):

Patricia A. Reuter-Lorenz ◽

Louise Stanczak ◽

Andrea C. Miller

Keyword(s):

Older Adults ◽

Age Differences ◽

Cognitive Aging ◽

Visual Fields ◽

Complex Task ◽

Brain Areas ◽

Younger Adults ◽

Age Related ◽

Age Related Changes ◽

Better Than

Several neuroimaging studies have reported that older adults show weaker activations in some brain areas together with stronger activations in other areas, compared with younger adults performing the same task. This pattern may reflect neural recruitment that compensates for age-related neural declines. The recruitment hypothesis was tested in a visual laterality study that investigated age differences in the efficiency of bihemispheric processing. Letter-matching tasks of varying complexity were performed under two conditions: (a) matching letters projected to the same visual field (hemisphere) and (b) matching letters projected to opposite visual fields (hemispheres). As predicted by the recruitment hypothesis, older adults generally performed better in the bilateral than unilateral condition, whereas younger adults showed this pattern only for the most complex task. We discuss the relation between these results and neuroimaging evidence for recruitment, and the relevance of the present bihemispheric advantage to other evidence for age-related changes in interhemispheric transfer.

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Age Differences in the Frontal Lateralization of Verbal and Spatial Working Memory Revealed by PET

Journal of Cognitive Neuroscience ◽

10.1162/089892900561814 ◽

2000 ◽

Vol 12 (1) ◽

pp. 174-187 ◽

Cited By ~ 587

Author(s):

Patricia A. Reuter-Lorenz ◽

John Jonides ◽

Edward E. Smith ◽

Alan Hartley ◽

Andrea Miller ◽

...

Keyword(s):

Older Adults ◽

Working Memory ◽

Age Differences ◽

Cognitive Aging ◽

Spatial Working Memory ◽

Verbal Working Memory ◽

Opposite Hemisphere ◽

Global Pattern ◽

Younger Adults ◽

Age Related

Age-related decline in working memory figures prominently in theories of cognitive aging. However, the effects of aging on the neural substrate of working memory are largely unknown. Positron emission tomography (PET) was used to investigate verbal and spatial short-term storage (3 sec) in older and younger adults. Previous investigations with younger subjects performing these same tasks have revealed asymmetries in the lateral organization of verbal and spatial working memory. Using volume of interest (VOI) analyses that specifically compared activation at sites identified with working memory to their homologous twin in the opposite hemisphere, we show pronounced age differences in this organization, particularly in the frontal lobes: In younger adults, activation is predominantly left lateralized for verbal working memory, and right lateralized for spatial working memory, whereas older adults show a global pattern of anterior bilateral activation for both types of memory. Analyses of frontal subregions indicate that several underlying patterns contribute to global bilaterality in older adults: most notably, bilateral activation in areas associated with rehearsal, and paradoxical laterality in dorsolateral prefrontal sites (DLPFC; greater left activation for spatial and greater right activation for verbal). We consider several mechanisms that could account for these age differences including the possibility that bilateral activation reflects recruitment to compensate for neural decline.

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Video Games and Emotion Regulation

GeroPsych ◽

10.1024/1662-9647/a000196 ◽

2018 ◽

Vol 31 (4) ◽

pp. 205-213 ◽

Cited By ~ 1

Author(s):

Kathryn L. Ossenfort ◽

Derek M. Isaacowitz

Keyword(s):

Older Adults ◽

Emotion Regulation ◽

Video Games ◽

Age Differences ◽

Interactive Media ◽

Age Groups ◽

Younger Adults ◽

Media Usage ◽

The Everyday ◽

Media Preferences

Abstract. Research on age differences in media usage has shown that older adults are more likely than younger adults to select positive emotional content. Research on emotional aging has examined whether older adults also seek out positivity in the everyday situations they choose, resulting so far in mixed results. We investigated the emotional choices of different age groups using video games as a more interactive type of affect-laden stimuli. Participants made multiple selections from a group of positive and negative games. Results showed that older adults selected the more positive games, but also reported feeling worse after playing them. Results supplement the literature on positivity in situation selection as well as on older adults’ interactive media preferences.

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Slow Down You’re Moving Too Fast

Journal of Media Psychology Theories Methods and Applications ◽

10.1027/1864-1105/a000130 ◽

2015 ◽

Vol 27 (2) ◽

pp. 53-63 ◽

Cited By ~ 3

Author(s):

Annie Lang ◽

Nancy Schwartz ◽

Sharon Mayell

Keyword(s):

Older Adults ◽

Cognitive Aging ◽

Attention And Memory ◽

Younger Adults ◽

Media Messages ◽

Two Factors ◽

The Difference

The study reported here compared how younger and older adults processed the same set of media messages which were selected to vary on two factors, arousing content and valence. Results showed that older and younger adults had similar arousal responses but different patterns of attention and memory. Older adults paid more attention to all messages than did younger adults. However, this attention did not translate into greater memory. Older and younger adults had similar levels of memory for slow-paced messages, but younger adults outperformed older adults significantly as pacing increased, and the difference was larger for arousing compared with calm messages. The differences found are in line with predictions made based on the cognitive-aging literature.

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Increased Glucose Activity in Subgenual Anterior Cingulate and Hippocampus of High Performing Older Adults, Despite Amyloid Burden

Journal of Alzheimer s Disease ◽

10.3233/jad-210063 ◽

2021 ◽

pp. 1-10

Author(s):

Wyllians Vendramini Borelli ◽

Eduardo Leal-Conceição ◽

Michele Alberton Andrade ◽

Nathalia Bianchini Esper ◽

Paula Kopschina Feltes ◽

...

Keyword(s):

Older Adults ◽

Anterior Cingulate Cortex ◽

Cognitive Aging ◽

Cingulate Cortex ◽

Amyloid Deposition ◽

Cognitive Testing ◽

Anterior Cingulate ◽

High Performing ◽

Potential Biomarker ◽

Definition Of

Background: Individuals at 80 years of age or above with exceptional memory are considered SuperAgers (SA), an operationalized definition of successful cognitive aging. SA showed increased thickness and altered functional connectivity in the anterior cingulate cortex as a neurobiological signature. However, their metabolic alterations are yet to be uncovered. Objective: Herein, a metabolic (FDG-PET), amyloid (PIB-PET), and functional (fMRI) analysis of SA were conducted. Methods: Ten SA, ten age-matched older adults (C80), and ten cognitively normal middle-aged (C50) adults underwent cognitive testing and multimodal neuroimaging examinations. Anterior and posterior regions of the cingulate cortex and hippocampal areas were primarily examined, then subregions of anterior cingulate were segregated. Results: The SA group showed increased metabolic activity in the left and right subgenual anterior cingulate cortex (sACC, p < 0.005 corrected, bilateral) and bilateral hippocampi (right: p < 0.0005 and left: p < 0.005, both corrected) as compared to that in the C80 group. Amyloid deposition was above threshold in 30% of SA and C80 (p > 0.05). The SA group also presented decreased connectivity between right sACC and posterior cingulate (p < 0.005, corrected) as compared to that of the C80 group. Conclusion: These results support the key role of sACC and hippocampus in SA, even in the presence of amyloid deposition. It also suggests that sACC may be used as a potential biomarker in older adults for exceptional memory ability. Further longitudinal studies measuring metabolic biomarkers may help elucidate the interaction between these areas in the cognitive aging process.

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Age Differences in Executive Control Assessed with a Robotic Object Hit and Avoid Test of Rapid Motor Decision Making

Innovation in Aging ◽

10.1093/geroni/igaa057.3255 ◽

2020 ◽

Vol 4 (Supplement_1) ◽

pp. 881-882

Author(s):

Alexandra Watral ◽

Kevin Trewartha

Keyword(s):

Older Adults ◽

Decision Making ◽

Executive Functioning ◽

Age Differences ◽

Executive Control ◽

Test Performance ◽

Cognitive Status ◽

Younger Adults ◽

Neuropsychological Tasks ◽

Measures Of Performance

Abstract Motor decision-making processes are required for many standard neuropsychological tasks, including the Trail Making Test (TMT), that aim to assess cognitive functioning in older adults. However, in their standard formats, it is difficult to isolate the relative contributions of sensorimotor and cognitive processes to performance on these neuropsychological tasks. Recently developed clinical tasks use a robotic manipulandum to assess both motor and cognitive aspects of rapid motor decision making in an object hit (OH) and object hit and avoid (OHA) task. We administered the OH and OHA tasks to 77 healthy younger adults and 59 healthy older adults to assess age differences in the motor and cognitive measures of performance. We administered the TMT parts A and B to assess the extent to which OHA performance is associated with executive functioning in particular. The results indicate that after controlling for hand speed, older adults performed worse on the OH and OHA tasks than younger adults, performance declines were far greater in the OHA task, and the global performance measures, which have been associated with cognitive status, were more sensitive to age differences than motor measures of performance. Those global measures of performance were also associated with measures of executive functioning on the TMT task. These findings provide evidence that rapid motor decision making tasks are sensitive to declines in executive control in aging. They also provide a way to isolate cognitive declines from declines in sensorimotor processes that are likely a contributing factor to age differences in neuropsychological test performance.

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AGE DIFFERENCES IN POLITICAL ENGAGEMENT: ROLE OF SELF-RELEVANCE

Innovation in Aging ◽

10.1093/geroni/igz038.2889 ◽

2019 ◽

Vol 3 (Supplement_1) ◽

pp. S785-S785

Author(s):

Tze Kiu Wong ◽

Helene H Fung

Keyword(s):

Older Adults ◽

Collective Action ◽

Older People ◽

Age Differences ◽

Political Behavior ◽

Social Issues ◽

Political Engagement ◽

Political Discussion ◽

Younger Adults

Abstract Previous studies usually found that older people are less politically engaged than younger adults, especially when considering political behavior other than voting. The current study extends the Selective Engagement hypothesis (Hess, 2014) to political engagement. 81 younger adults and 79 older adults rated 8 issues on self-relevance and their willingness to engage in political discussion, arguments and collective action on each issue. The predicted moderating effect of self-relevance was not found, but older people indeed are more willing to discuss (B = 0.07, p = 0.027) and argue with others on more self-relevant issues (B = 0.06, p = 0.031). Perceived cost of collective action was found to be a moderator, such that self-relevance was less important than other factors for high-cost actions (B = -0.016, p = 0.013). The current research sheds light on potential ways to increase older adults’ engagement in social issues.

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Age Differences in the Social Associative Learning of Trust Information

10.31234/osf.io/b38rd ◽

2022 ◽

Author(s):

Kendra Leigh Seaman ◽

Alexander P. Christensen ◽

Katherine Senn ◽

Jessica Cooper ◽

Brittany Shane Cassidy

Keyword(s):

Older Adults ◽

Age Differences ◽

Social Cues ◽

Trust Game ◽

Time Model ◽

Younger Adults ◽

Cortical Areas ◽

Age Related ◽

The Social ◽

Over Time

Trust is a key component of social interaction. Older adults, however, often exhibit excessive trust relative to younger adults. One explanation is that older adults may learn to trust differently than younger adults. Here, we examine how younger (N=33) and older adults (N=30) learn to trust over time. Participants completed a classic iterative trust game with three partners. Younger and older adults shared similar amounts but differed in how they shared money. Compared to younger adults, older adults invested more with untrustworthy partners and less with trustworthy partners. As a group, older adults displayed less learning than younger adults. However, computational modeling shows that this is because older adults are more likely to forget what they have learned over time. Model-based fMRI analyses revealed several age-related differences in neural processing. Younger adults showed prediction error signals in social processing areas while older adults showed over-recruitment of several cortical areas. Collectively, these findings suggest that older adults attend to and learn from social cues differently from younger adults.

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Age differences in the precision of memory at short and long delays

10.31234/osf.io/zucr3 ◽

2019 ◽

Author(s):

Stephen Rhodes ◽

Emily E Abenne ◽

Ashley M Meierhofer ◽

Moshe Naveh-Benjamin

Keyword(s):

Older Adults ◽

Age Differences ◽

Long Term Memory ◽

Age Difference ◽

Younger Adults ◽

Recall Error ◽

Successful Recall ◽

Error Distance

Age differences are well established for many memory tasks assessing both short-term and long-term memory. However, how age differences in performance vary with increasing delay between study and test is less clear. Here we report two experiments in which participants studied a continuous sequence of object-location pairings. Test events were intermixed such that participants were asked to recall the precise location of an object following a variable delay. Older adults exhibit a greater degree of error (distance between studied and recalled locations) relative to younger adults at short (0-2 intervening events) and longer delays (10-25 intervening events). Mixture modeling of the distribution of recall error suggests that older adults do not fail to recall information at a significantly higher rate than younger adults. Instead, what they do recall appears to be less precise. Follow up analyses demonstrate that this age difference emerges following only one or two intervening events between study and test. These findings are consistent with the suggestion that aging does not greatly impair recall from the focus of attention but age differences emerge once information is displaced from this highly accessible state. Further, we suggest that age differences in the precision of memory, but not the probability of successful recall, may be due to the use of more gist-like representations in this task.

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