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 119 for “"Visual Processing"”.
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Towards more biologically plausible deep learning and visual processing
… networks (e.g., ResNet, He et al., 2016) for visual processing (3) Batch Normalization (Ioffe and Szegedy, 2015). For each of the three aspects, I propose biologically-plausible modifications of the ANN models to make them more implementable by the brain while maintaining (or even improving) …
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The relationship between hand-nearness, emotional arousal, and visual processing
… his or her hands near an object: hand-nearness), visual processing of that object differs in several ways from visual processing of an object far from the hands. Interestingly, the changes that visual processing undergoes during hand-nearness are the same as those that occur when an observer is …
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The Mechanisms And Roles Of Feedback Loops For Visual Processing
… represents a key element in neural signal processing. To address the question on how do neural feedback loops work in terms of synapses, microcircuitry, and systems dynamics, we developed a chick midbrain slice preparation to study and characterize one important feedback loop within the …
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Anxiety, Ambiguity, and the Emotional Modulation of Early Visual Processing.
… accounts posit that anxiety-related information-processing biases implicate the dissociative influence of state and trait anxiety on bottom-up and top-down mechanisms, respectively. Domain-specific accounts hypothesise that emotional modulation of vision is based on level of threat and mediated …
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The parallel nature of early visual processing in visual search
Visual search is a process that is ubiquitous in daily life. Some are relatively easy – looking for a red sock among black socks – while others are extremely difficult – looking for tumors in x-ray images. Classic theories and models of search have long assumed that these easy searches, referred to …
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Characterizing Image Recognition Difficulty in Artificial and Biological Visual Processing
In recent years, computational models trained to do object recognition have become increasingly capable. Models have demonstrated significant improvements and have achieved saturated performance on many standard image classification benchmarks sparking discussion of whether these models have …
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Using neural population decoding to understand high level visual processing
… relevant for understanding neural information processing. By applying this method in novel ways to data from several vision experiments, I am able to make several new discoveries, including the fact that abstract category information is coded in the inferior temporal cortex (ITC) and prefrontal …
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About turn:neural mechanisms underlying visual processing of rotated letters and digits
… thesis explores neural activity associated with processing of rotated alphanumeric characters, focusing particularly on linear and quadratic trend components of orientation-dependent activity. Choice of these components was driven by results of reaction-time (RT) studies; judging whether …
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The influence of semantics on the visual processing of natural scenes
… question in cognitive science has been: is visual processing completely encapsulated and separate from semantics or can visual processing be influenced by semantics? We address this question in two ways: 1) Do pictures and words share similar representations and 2) Does semantics modulate …
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What Properties Drive Differences in Visual Processing between Real Objects and Images?
Recent research has found that real world objects are processed differently than image-based objects due to their affordances or ability to be handled and used a certain way. This study aims to test whether this technology holds the same implications as real-world objects, specifically in regards …
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Visual Processing Across Space and Time in Children with Autism Spectrum Disorder
… by better detection and identification of visual targets. This enhanced ability to discriminate features has been replicated across spatial and temporal displays. Research also suggests that visual perceptual abilities are correlated with the severity of core autism symptoms in this …
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Visual Processing Ability: Early Predictor Of Inferential Language And Phonemic Awareness Ability
… a statistically significant relationship among visual processing, inferential language, and phonemic awareness ability. All participants attended Model Laboratory school, passed a visual and hearing screening, spoke English as the primary language in their household, possessed no history of …
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Temporal Characteristics of Zebrafish Cone Types and Their Role in Separate Visual Processing
… information are processed separately by the visual systems of most higher vertebrates via anatomically separate pathways. Research on primates suggests that the luminance mechanism transmits information about stimulus luminance, movement, and flicker while chromatic mechanisms signal color …
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Analysis of Zebrafish Optic Tectum Visual Processing Before and After Optic Nerve Crush
The visual system processes information at various levels. Initial processing takes place in the retina, which then sends information to the optic tectum, the first visual brain center in lower vertebrates, for further processing. There were two main goals of this study. The first goal was to …
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An experimental cut curriculum for the remediation of visual processing impairments affecting reading
… figure drawings of average and poor readers with visual perceptual problems, and measured the effects of an experimental art program on the reading, drawing, and design copying abilities of poor readers. Comparison of pre-test scores on the Goodenough Drawing Test, the Bender Visual Motor Gestalt …
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The visual processing of human faces and bodies as visual stimuli in natural scenes
… that human faces can be detected rapidly in a visual scene and that they automatically capture a viewer’s attention over other objects. However, under natural viewing conditions the human face is attached to a substantial cue, the human body. The evidence to-date of a similar attentional …
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The role of individual variation in auditory and visual processing: implications for mate choice
… many songbirds couple their songs with a visual display. I tested how preference functions (i.e., the function describing female preference across variation in male traits) and subsequent selection on male traits can be altered under four scenarios of varying multimodal signal content. To …
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Age-Related Changes in Visual Processing Speed: A Pilot Study Using the Motor Free Visual Perception Test- 4
… motor vehicle accidents. Evidence reveals that visual processing speed decreases with age, which may impact driving. The Motor-Free Visual Perception Test- Third Edition (MVPT-3) is used as a pre-driving assessment and has an age-normed Response Time Index that measures visual processing speed. …
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A Statistical Evaluation of the Heinsen-Moore Test of Visual Processing Skills Used for Group Vision Screening in Elementary Classrooms
Made available in DSpace on 2014-12-10T18:46:59Z (GMT). No. of bitstreams: 1 7317604.pdf: 7377038 bytes, checksum: 4be320944638652feef8eadedc797ca0 (MD5) Previous issue date: 1973
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Behavioral measurements of visual processing in adult male and female hooded rats: Do visual tasks reflect sex differences in visual cortex morphology?
… sex differences are pervasive in the primary visual cortex of hooded rats, it is not known whether sex differences occur in vision in these animals. The purpose of this dissertation is to examine whether sex differences in morphology in the visual cortex of adult hooded rats influence vision …
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