| 31. |
- Sandberg, Petra, 1979-, et al.
(författare)
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Executive process training in young and old adults
- 2014
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Ingår i: Aging, Neuropsychology and Cognition. - : Taylor & Francis. - 1382-5585 .- 1744-4128. ; 21:5, s. 577-605
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Tidskriftsartikel (refereegranskat)abstract
- There is a growing body of research on the modifiability of executive functions in different stages of life. Previous studies demonstrate robust training effects but limited transfer in younger and particularly in older adults. The aim of the present study was to investigate whether a theoretically derived intervention for executive functioning, addressing several basic processes (updating, shifting, and inhibition), can induce transfer effects in early and late adulthood. Fifty-nine healthy adults, 29 young and 30 older adults, were randomly assigned to either training or no-contact control groups. The training groups received 15 sessions of executive process training for about 45 min/session during 5 weeks. A test battery including a criterion task and near, intermediate, and far transfer tasks was administered before and after training. Results showed pronounced age-equivalent gains on the criterion task. Near transfer was seen to non-trained updating and inhibition tasks for the young and older trained participants. However, only the young adults showed intermediate transfer to two complex working memory tasks. No far transfer effects were seen for either age group. These findings provide additional evidence for age-related constraints in the ability to generalize acquired executive skills, and specifically show that training of multiple executive processes is not sufficient to foster transfer beyond the very near in older adults.
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| 32. |
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| 33. |
- Stenling, Andreas, 1982-, et al.
(författare)
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Physical activity and cognitive function: between-person and within-person associations and moderators
- 2021
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Ingår i: Aging, Neuropsychology and Cognition. - : Informa UK Limited. - 1382-5585 .- 1744-4128. ; 28:3, s. 392-417
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Tidskriftsartikel (refereegranskat)abstract
- In the present study, we decomposed between- and within-person effects and examined moderators of the longitudinal physical activity-cognition association. Participants (N = 1722) were drawn from the Betula study and we included four waves of data across 15 years. Bayesian multilevel modeling showed that self-reported physical activity did not predict changes in cognitive function. Physical activity positively predicted cognitive performance at baseline, and the relations were stronger for more active (compared to less active) older adults. Physical activity had a positive within-person effect on cognitive function. The within-person effect of physical activity on episodic memory recall was stronger for participants who on average engaged in less physical activity. The within-person effect on verbal fluency was stronger for participants with more education. Our results suggest that preserving cognitive functioning in old age might be more a matter of what you do in old age than reflecting what you did earlier in life.
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| 34. |
- Wehling, Eike Ines, et al.
(författare)
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Familiarity, cued and free odoridentification and their association with cognitive functioning in middleaged and older adults
- 2010
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Ingår i: Aging, Neuropsychology and Cognition. - : Psychology Press, Taylor and Francis Group. - 1382-5585 .- 1744-4128. ; 17:2, s. 205-219
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Tidskriftsartikel (refereegranskat)abstract
- The aim of the present study was to examine the association between familiarity of odors, cued and free odor identification performance and cognitive function in elderly adults. It was further investigated how age affects performance on the various odor tasks. A third aim was to investigate the role of familiarity in explaining performance on the free identification task. One hundred and thirty-six participants (aged 45–79 years) with normal olfactory sensitivity were assessed with the Scandinavian Odor Identification Test (SOIT) and standardized tests of cognitive function. Familiarity did not correlate with any measure of cognitive function, while verbal identification performance was associated with several cognitive measures, although correlations were modest. In this sample, free odor identification was affected by increasing age to a marginally larger extent than cued identification performance and familiarity ratings. The results suggest that the different olfactory tasks involve different levels of cognitive processing.
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| 35. |
- Yonker, Julie E, et al.
(författare)
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Verified hormone therapy improves episodic memory performance in healthy postmenopausal women.
- 2006
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Ingår i: Neuropsychology, development, and cognition. Section B, Aging, neuropsychology and cognition. - Hove : Informa UK Limited. - 1382-5585 .- 1744-4128. ; 13:3-4, s. 291-307
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Tidskriftsartikel (refereegranskat)abstract
- Studies of hormone therapy (HT) and cognition have yielded conflicting results. The aim of this observational study was to examine the effect of estradiol, via serum verified HT (estradiol, estriol, progesterone) and endogenous estradiol, on 108 healthy postmenopausal women's cognitive performance. The results demonstrated that the 43 HT-users performed at a significantly higher level than non-users on episodic memory tasks and on a verbal fluency task, whereas HT-users and non-users did not differ on tasks assessing semantic memory and spatial visualization. In addition, there was a positive relationship between serum estradiol level and episodic memory performance, indicating that postmenopausal HT is associated with enhanced episodic memory and verbal fluency, independent of age and education. These observational results suggest that HT use may be sufficient to exert small, yet positive effects on female sensitive cognitive tasks. Hormone therapy compliance and formulation is discussed as confounding factors in previous research.
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| 36. |
- Ziaei, Maryam, et al.
(författare)
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Neural correlates of affective empathy in aging : A multimodal imaging and multivariate approach
- 2022
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Ingår i: Aging, Neuropsychology and Cognition. - : Routledge. - 1382-5585 .- 1744-4128. ; 29:3, s. 577-598
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Tidskriftsartikel (refereegranskat)abstract
- Empathy is one such social-cognitive capacity that undergoes age-related change. C urrently, however, not well understood is the structural and functional neurocircuitry underlying age-related differences in empathy. This study aimed to delineate brain structural and functional networks that subserve affective empathic response in younger and older adults using a modified version of the Multifaceted Empathy Task to both positive and negative emotions. Combining multimodal neuroimaging with multivariate partial least square analysis resulted in two novel findings in older but not younger adults: (a) faster empathic responding to negative emotions was related to greater fractional anisotropy of the anterior cingulum and greater functional activity of the anterior cingulate network; (b) however, empathic responding to positive emotions was related to greater fractional anisotropy of the posterior cingulum and greater functional activity of the posterior cingulate network. Such differentiation of structural and functional networks might have critical implications for prosocial behavior and social connections among older adults.
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| 37. |
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| 38. |
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| 39. |
- Nilsson, Lars-Göran, et al.
(författare)
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Cognitive test battery of CASCADE : Tasks and data.
- 2005
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Ingår i: Aging, Neuropsychology and Cognition. - 1382-5585. ; 12:1, s. 32-56
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Tidskriftsartikel (refereegranskat)abstract
- This paper presents the cognitive test battery used in the CASCADE Study (Cardiovascular Determinants of Dementia) for examining the consequences of cerebral white matter lesions and atrophy. The test battery includes nine different tasks assessing memory, executive function, and global cognitive function. Three episodic memory tasks were used in combinations to assess the role of attention and speed on encoding. Estimates of short- and long-term memory capacity were also derived from these three memory tasks. Semantic memory production / frontal lobe functions were assessed by means of a word fluency test. The Letter Digit Substitution test and the Stroop test were used to assess speed of processing and attention. Motor speed was measured with the Purdue Pegboard test, and global cognitive function was assessed by the Mini Mental State Examination. Overall performance data for the whole CASCADE sample and for each of eight study centers are presented for each test. Possible reasons for performance differences among study centers are discussed.
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