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 78 for “"Age-related differences"”.
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White Matter Integrity And Age Related Differences In Reaction Time Components
… phenomenon associated with advanced aging. Age-related deterioration in white matter integrity might play a role in age-related increase in reaction time (RT). However, the association between microstructural differences in particular white matter regions or tracts with RT is unclear. …
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Age-related differences in semantic priming : evidence from event-related brain potentials
… in response to a word that immediately follows a related sentence or single-word is age-invariant. This was done using the N400 event-related brain potential (ERP). N400 amplitude varies inversely with semantic priming (Kutas, 1980), and this effect is larger for sentence primes than for word …
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Investigating age-related differences in spatial presence formation and maintenance in virtual reality
… experiences over the course of three days. Age was used as a proxy for changes in cognitive abilities. Additionally, measures of specific attentional abilities were administered as well as existing and novel measures of spatial presence during and after the virtual reality. The primary …
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Investigation of Age Related Differences in the Rewiring of P2-Olfactory Receptor Neurons
… glomeruli, using X-gal staining. To determine if age affects ORN regeneration, left olfactory nerve transections were performed on P2 mice from immature (five-weeks old) and mature (1 6-weeks old) groups. Following recovery, the olfactory bulbs were processed to observe ORN regeneration. A …
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Age-Related Differences in the Experience of Health Anxiety and Use of Coping Strategies
… and 36 young adults by providing false health-related feedback. Outcome variables included physiological arousal (heart rate, blood pressure), self-reported arousal (distress, fear of body sensations), and self-reported emotions recorded across three periods: baseline, induction, and recovery. …
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An ERP Study to Investigate Age-Related Differences in Sensory Gating and Auditory Processing
… to aging. The present research investigated age-related changes in auditory sensory gating using electroencephalography and quantified the effect of age on adaptive gating responses for oddball stimuli. Age-related differences in sensory gating and oddball responses were observed in …
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Age-related differences in ethanol withdrawal, withdrawal-induced anxiety, cognition, and response to allopregnanolone.
… deficits in motor and cognitive performance in aged rats are limited. The present study thus sought to investigate age-related differences in the severity of ethanol withdrawal in adult and aged rats and examine potential long-term deficits resulting from chronic liquid ethanol diet. Results …
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Age-related differences in taste aversion learning: preexposure to the conditioned stimulus through suckling
Rat pups (Rattus Norvegicus) were exposed to saccharin through suckling dams whose drinking water had been adulterated during lactation. Behavioral evidence is reported that the saccharin penetrated the milk and was detectable by the pups. Preexposure to saccharin did not influence the effects of …
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The age-related differences in temporal characteristics of head control in response to postural perturbations
Fall-related traumatic brain injuries (TBI) are the leading cause of morbidity and mortality among older adults. Previous studies found that the declines of neck musculature with advanced age may be related to compromised head control that may elevate the risk of fall-related TBIs. However, a …
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Age Related Differences in Motor Output Variability During Isometric, Concentric and Eccentric Quadriceps Femoris Muscle Contractions
… Quadriceps strength for the elderly was on average 40% lower of that of young participants and eccentric strength was affected the least. The standard deviation (SD) and coefficient of variation (CofV) of force was greater during discrete than during continuous isometric contractions. During …
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Investigating age-related differences in visual sampling behaviour during adaptive locomotion and their consequences for stepping accuracy
… latencies and reduced magnitude. We suggest that age- and fall-risk related differences in strategies governing visual sampling and the allocation of attention during adaptive locomotion contribute to incidences of elderly falls.
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Age-related differences in visuomotor integration as measured by object affordance effects - a combined behavioural and neurophysiological investigation
… is relatively little evidence as to how healthy ageing affects these processes. A central role is played by the human capacity for reaching and grasping. Grasping an object requires complex visuomotor transformations, including processing of the object’s extrinsic features (it’s spatial location) …
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An examination of age-related differences in lower extremity joint torques and strains in the proximal femur during gait
… much of the increased risk of hip fracture with age can be explained by age-related decreases in bone mineral density, muscles and motor control are altered by aging as well. Muscles forces in vivo are thought to have a prophylactic effect that can reduce shear and bending in the femur. This is …
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Age-related Differences in Patient Outcomes and Factors Associated with Psychiatric Stays at the Dube Centre, Royal University Hospital, Saskatoon
… exponential increase in life expectancy, the average 65-year-old Canadian can expect to live for an additional 21 years. This increase in the population of seniors will significantly impact the healthcare system and though mental health conditions occur throughout life course, seniors with mental …
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The role of feedback and age-related differences in force production accuracy, variability, and shape across oral and manual effectors
… to determine whether sensory feedback mediates age-related difference in force production accuracy, variability, and shape across effectors. The premise of these experiments was that the type of sensory feedback would influence discrete force production. In order to test this premise, two …
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Perceptual organization and selective attention: Age-related effects
The research dealing with age-related deficits in driving performance has suggested that changes in visual selective attention are related to changes in driving performance with age. The research reported here seeks to complement past research by investigating age-related changes in facets of …
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