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.
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Showing 1 to 20 of 85 for “"effects of aging"”.
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The effects of aging on cardiac mechanics
It is well established that the aging heart exhibits left ventricular (LV) diastolic dysfunction and changes in mechanical properties, which have been attributed to alterations in the extracellular matrix (ECM). The investigators tested the hypothesis that the mechanical properties of cardiac …
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The Effects of Aging on Cross-Modal Attention
Healthy aging is accompanied by declining sensory function in all five senses and subtle deficits in higher order cognition. Among the age-related changes that have been observed is an increase in multisensory integration. In the young brain, multisensory integration is governed by a combination of …
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Effects of aging on bond between FRP and concrete
… leading to hybrid structures. The study of using FRP rebars and wraps to reinforce our nation's existing bridge decks, beams and columns is proving that they are economical as well as future material of choice.;This research deals with the bond behavior of FRP composite wraps …
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Effects of Aging on Behavioral Measures of Listening Effort
… problem among elderly individuals. Older adults often report challenges with understanding speech, particularly in noisy environments. Growing evidence suggests that cognitive effort is a significant factor in speech understanding in noise. Although hearing loss is commonly experienced by older …
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Quantifying coordination of human gait : fall risk and effects of aging
Falls have become an immense source of physical, social, and economic hardship among older adults. Compromised coordination, defined as a decrease in the ability to properly time the motion of body segments with one another, is thought to be one factor contributing to the high rate of falls in …
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The Effects of Aging on EGFR/pSTAT3-Dependent Gliovascular Structural Plasticity
… (1). First described by Virchow as being 'glue' of the brain (2), modern research has truly extended our knowledge and understanding regarding the vast array of roles these cells execute under normal physiological conditions. Examples include neurotransmitter reuptake at the synapse (3), the …
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Neural activity reveals effects of aging on inhibitory processes during word retrieval
<p>Word retrieval difficulties are one of the most frustrating problems in older adults. Poorer access to phonological (speech sound) representation of the target word has been postulated as the underlying deficit, supported by findings of improvement in word retrieval after phonological priming. …
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Brain anatomy: investigations of the effects of aging, fitness, and arterial stiffness
… explores the mechanisms and lifestyle modifiers of brain anatomy throughout the aging process. First, a thorough review of the mechanisms of fitness on brain anatomy is presented. Next, a study examining the effects of aging and fitness on cortical and subcortical brain anatomy in a group of …
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Dynamic Corticomuscular Coherence during Cyclical Ankle Movements: Effects of Aging and Parkinson’s Disease
… Although the primary neuropathology and symptoms of PD have been well established, the physiological mechanisms behind specific kinematic abnormalities are not well understood. Many such abnormalities (e.g., gait disturbances) can significantly impact a person’s quality of life. One way that PD …
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The Effects of Aging on Associative Learning and Memory Retrieval in Causal Judgment
… learning and memory. Retrospective revaluation of causal cues requires associative memory (Aitken, Larkin, & Dickinson, 2001) to bind multiple cues together and use these associations to retrieve unseen cues for revaluation of their associative value. The difficulty that older adults experience …
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New Effects of Aging and Lattice Intercalation on Surface Properties of Titanate Nanobelts
… have structural characteristics beyond that of clays. Due to a negatively charged lattice matrix of edge-shared TiO6-octahedra, the location of intercalated cations within the interlayer space may dictate the charge-conductions. This environment may in turn govern the lattice-framework's …
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Simulating the effects of aging and hearing loss on the masking-level difference
… (diotic) or different (dichotic). Once any part of the stimulus is changed between the ears, the signal becomes easier to detect compared to the diotic condition. The difference in masked threshold between the diotic condition and the dichotic condition has been termed the masking-level …
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Investigating Spatial Memory Reconsolidation in Rats: Memory Updating, Effects of Aging, and Hippocampal Network Activity
… to interference. There is now an abundance of evidence that reactivation or retrieval of a consolidated memory opens up a window of time during which the memory can be strengthened, disrupted, or updated via a process of "reconsolidation". This dissertation is comprised of three experimental …
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The Imipramine Binding Site: Effects of Aging, Ovarian Hormones, Adrenal Hormones, and Chronic Antidepressant Treatment
… been described in the brain and blood platelets of several species of animals, including rats and humans. Decreased levels of imipramine binding sites are found in depressed patients when compared to controls.
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Effects of Aging and Spectral Shaping on the Sub-cortical (Brainstem) Differentiation of Contrastive Stop Consonants
<p>Purpose: The objectives of this dissertation are to: (1) evaluate the influence of aging on the sub-cortical (brainstem) differentiation of voiced stop consonants (i.e. /b-d-g/); (2) determine whether potential aging deficits at the brainstem level influence behavioral identification of the …
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The neighbors will tell you what to expect: Effects of aging and predictability on language processing
Contains fulltext : 175956.pdf (Publisher’s version ) (Open Access)
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Quantifying the Effects of Aging on the Mechanical Properties of Medical Grade Polycarbonate and UV Cured Adhesives
… polymer technology have created a generation of high strength-to-weight materials for medical applications, with virtually no adverse interactions with body fluids. Polycarbonate is a widely used engineering polymer, and is often used in connection with ultra-violet light (UV) cured adhesives. …
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Quantifying effects of aging across structures of the mouse auditory system, with in-vitro brain slice preparations
Aging is a process fundamentally different from those studied by most scientists. Whereas in the course of most scientific inquiry, engineers or scientists attempt to create order or elucidate how its complexity arises, aging is the study of precisely the opposite. How order decays, how and with …
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