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 16 of 16 for “"visual scanning"”.
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Investigating the relationship between intelligence and executive function through visual scanning strategies
… intelligence was associated with more efficient visual scanning strategies (i.e. fewer fixations and longer durations). Individuals who made fewer fixations and had longer fixation durations scored higher on block design, matrix reasoning, and vocabulary subscales in the WASI-II, and fixation …
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Effects of spatial uncertainty in visual scanning on divided and selective attention and multi-task performance
… divided attention by examining the relation of visual scanning as a sequential and selective attention process to other concurrent spatial or verbal tasks. A distinction is proposed between visual scanning with or without spatial uncertainty regarding the possible differential effects of these …
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The Effects of Competition and Perceived Pressure on Performance of a Visual Scanning Task: A Test of Cognitive Evaluation Theory
<p>Cognitive Evaluation Theory was developed by Deci & Ryan, (1985) to explain factors that affect intrinsic motivation. This study was done to test this theory by having volunteers engage in direct and indirect competition while working on a simple task in a time-pressured environment. …
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The Distracted Driver: Modeling the Impact of Information Bandwidth, in -Vehicle Task Priority, and Spatial -Separation on Driver Performance and Attention Allocation
… environment impact driver performance and visual scanning behavior. For these experiments, younger drivers drove through varying traffic environments in a simulator while performing a concurrent number task presented on a visual IVT display. Experiment 1 examined the relative contribution …
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Do Olfactory Stimuli Increase Presence During Exposure Tasks: A Comparative Study
… response (electrodermal activity), visual scanning, and self-report measures. Linear Mixed Modeling showed relationships between olfactory stimuli and presence ratings as well as self-reported anxiety levels, but not visual scanning or physiological arousal. Recommendations were made …
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Problems With Auditory Alarms in Anesthesia and Tests of a Proposed Solution: Multimodal Multitask Performance With an Auditory Display
… using an ambulatory eyetracker, and their visual scanning behavior analyzed. A model for operators' monitoring behavior was developed that included effects of alarms, workload, monitored-parameter bandwidth, memory limitations, information-access cost, control-actions taken, correlations …
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Identify Mind Wandering Behind the Wheel
… out”. Driving performance metrics and oculomotor scanning data were analyzed to compare driving behaviors and performance under attentive versus inattentive mental states. The results showed that mind wandering caused horizontal narrowing of drivers' visual scanning, shifts of lane position, and a …
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The visual attention battery: Predicting flight performance with visual attention tasks
… flexibility task, feature and conjunction visual search tasks, and a dichotic listening task. Instructor pilots displayed evidence of more efficient task switching, and focused attention than novice pilots. On the other hand, instructor and student pilots were equally adept at visual …
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Large Scale Acquisition of Complex Environments by Data Fusion from Mobile Visual and Depth Sensors
… and Construction (AEC) for efficient scanning and modeling of large, structured environments. The primary objective is the development and application of a state-of-the-art wearable system integrating laser and visual scanning technology. This innovative mobile mapping system (MMS) is …
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Effects of Habitual and Contingency Experience on the Visual Discrimination Learning and Decision Time of 4-Month-Old Infants
… experiences aimed at promoting exhaustive visual scanning of stimuli to enhance visual discrimination learning. There were three phases to this study. Phase 1 was an assessment of all infants' natural attending behavior to compare to existing laboratory norms. Phase 2 consisted of the …
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Role of Acetyl-L-Carnitine in Hepatic Encephalopathy
… activities related to attention/concentration, visual scanning and tracking, psychomotor speed and mental flexibility, language short-term memory, attention, and computing ability. In fact, Acetyl-L-carnitine induces ureagenesis leading to decreased blood and brain ammonia levels. …
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The Role of Contingency and Ostensive Cues on Infants' Cognitively Demanding Word-Object Learning
… switched, infants significantly increased their visual scanning of the speaker's mouth compared to control trials. In Experiment 2, the same procedure was followed with a new group of 14-month-olds, except that the speaker now looked in the opposite direction from the objects on the screen, but …
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Attention Deficit Hyperactivity Disorder with Comorbid Anxiety/Depression in Adults: Impacts on Neuropsychological Functioning
… between ADHD and working memory and a measure of visual scanning, sequencing, and psychomotor speed (Trailmaking A). In other words, scores on these two outcome variables differentiated participants who had a co-occurring anxiety or depression diagnosis from those with only ADHD. This study …
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Development and Demonstration of Scalable Methods for Research on Human Factors in Driving
… may be used to assess distraction based on the visual scanning behavior of a “driver” who makes steering, braking and acceleration inputs intended to mimic the driver actions in a recorded driving video. I examined the application of the methods developed in three studies. Study 1 looked at the …
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Executive Functioning and Memory Performance in ADHD and Asperger's Syndrome
… to have more difficulty on processing speed, visual scanning abilities, and cognitive flexibility. The results of this study may be able to help discriminate between the diagnostic groups of ADHD and Asperger’s Syndrome. It is recommended that future research expands the test measures and …
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Sleep inertia and alcohol impairment in young adults: neurocognitive effects and interactions Implications for fire escape behaviours
… in a young adult population. Mental tracking, visual scanning, psychomotor speed, working memory and sustained, selective, and divided attention functions were assessed for performance decrements and reference to speed-accuracy trade-off effects. Participants were 24 young adults (18-26 years) …