Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
Results
Showing 1 to 19 of 19 for “"cognitive ageing"”.
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Lifestyle, Brain Structure and Cognitive Ageing
… the lifestyle and brain structure correlates of cognitive ageing. Using large datasets and a range of multivariate statistical approaches, it is divided into three empirical sections, which are framed by a General Introduction and Conclusion. The first Chapter, the General Introduction, discusses …
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The distinct contributions of cardiovascular risk factors to cognitive ageing
… aims to understand how individuals within an ageing global population can maintain cognitive health and independence throughout life. It is generally accepted that what is good for the heart is also good for the brain. However, it is not clear whether different aspects of cardiovascular health …
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Sarcopenia and cognitive ageing: investigating their interrelationship, biological correlates and the role of glucocorticoids
Background Sarcopenia and age-related cognitive decline (ARCD) are important age-related conditions which significantly impact upon the quality of life of older adults. ARCD is a well-established research area, whereas sarcopenia is a relatively new field. Research into the inter-relationships …
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Assessment of cognitive ageing: Applying generalisability theory, Rasch and network analyses to establish reliability and validity of measures
Accurate assessment of cognitive ageing is critical to improve healthcare for older adults with cognitive decline. While bio-physiological assessments, such as laboratory, physical, and neurological examinations, offer high precision and interval-level scaling, they are limited by not reflecting …
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Ascertainment, prediction and implications of dementia diagnosis in a study of 'healthy' cognitive ageing: the Lothian Birth Cohort 1921
In the context of an ageing global population, dementia poses a significant public health challenge. While there is no cure, understanding the risks for dementia and how these may be minimised is key to reducing the impact of the disease. As life expectancy improves, increasing proportions of the …
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The relationship between autobiographical memory an executive functions in older adults
… executive functioning in normal and pathological ageing. The particular focus was on two aspects of autobiographical memory - recall specificity and fluency - that have been little investigated in cognitive ageing research to date. The literature reviewed included the domains of cognitive and …
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Sensory Processing Sensitivity: exploring associations with cognition and clinical populations
… tenets of the trait centre around differences in cognitive processing, particularly environmental awareness, allocation of attention and depth of processing; however cognitive features associated with SPS have not been systematically synthesised and are poorly understood. This review examined the …
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Facilitating Healthy Ageing: Neuroprotective Effects of Mindfulness Practice
… to maintain focus on the breath while meta-cognitive awareness and executive control are required to detect and correct mind wandering. The purpose of this thesis was to investigate whether a simple, mindfulness based breath awareness meditation, administered over a short period to …
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Ageing Futures: Towards Cognitively Inclusive Digital Media Products
… people with technology. In light of claims that cognitive ageing results in an increasing disconnection from novel digital media in old age, inclusive design is apparently trapped in a discourse in which digital media products and interfaces are designed as a response to a deterministic decline …
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Effects of healthy ageing on the precision of episodic memory
… memory decline is one of the hallmarks of human cognitive ageing, but our understanding of the neurocognitive mechanisms underlying this decline remains limited. In particular, it is unclear whether healthy ageing differentially affects distinct components of episodic memory retrieval; …
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Memory Fidelity in Healthy Ageing and Risk for Cognitive Decline
Memory decline is characteristic of cognitive ageing and it has been suggested that one important factor underpinning the magnitude of age deficits is a reduction in the fidelity or quality of perceptual and mnemonic representations. This thesis examined cognitive and neural underpinnings of …
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Adult age differences in thinking styles and probabilistic reasoning : the effect of natural frequencies
… in order to examine the relationship between cognitive ageing and probabilistic reasoning, and to provide greater variability in a range of individual differences. Using samples of young participants (18-32 years) and older participants (>60 years) the studies reported in this thesis did find …
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Effects of attention on the precision of neural and mnemonic representations in healthy ageing
Episodic memory is an integral cognitive function, and its decline is a hallmark symptom of cognitive ageing. Amongst the various memory processes, it is well established that ageing particularly impacts recollection. Emerging studies using sensitive behavioural and imaging techniques indicate that …
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Electrophysiological and Behavioural Markers of Associative Source Memory Decline in Normal Ageing
… M. Johnson, Hashtroudi, & Lindsay, 1993). The ageing process shows a progressive decline in memory (Cabeza, Anderson, Locantore, & Mcintosh, 2002) which is thought to be related to atrophy in regions of the brain which are essential for memory (Pasquier, 1999). Source memory is particularly …
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Vascular contributors to cognitive impairment and dementia: insights from existing data
Cognitive impairment and dementia pose a significant and growing public health challenge, yet progress in developing effective interventions to prevent dementia or slow cognitive decline has been limited. Among potential targets, vascular risk factors have emerged as particularly promising. Given …
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The role of attention in spatial (dis)orientation of older adults.
Human ageing is accompanied by deficits in spatial navigation abilities. These changes are widespread and affect many components of the navigation system. Such changes have profound effects on an individual’s independence as their ability to learn and find their way through novel environments …
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Sporadic cerebral small vessel disease and cognitive abilities
… disease (SVD) is a leading cause of vascular cognitive impairment, contributing to multiple neurological disorders ranging from stroke, to mild cognitive impairment and dementia. However, despite a huge number of studies on the subject, we have a limited understanding of how SVD affects …
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Determinants and correlates of intra-individual variability in reaction time
… diseases. It can predict change in cognitive performance in ageing, progression from normal ageing to mild cognitive impairment, and even death. Therefore, RT IIV may be of great practical importance. However, RT IIV and mean RT are correlated; therefore it is often problematic to …
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Age differences in the underlying mechanisms of product placement influence
… (Ofcom, 2013). Yet, little is known about how ageing mediates susceptibility to product placements. This thesis will integrate three areas of existing research and address questions which have emerged from the literature. The literature review (Chapter 1) initially provides an overview of …