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 51 for “"spatial attention"”.
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A Statistical Approach to Visual Masking and Spatial Attention
… processing in the visual system. Visual spatial attention is also known to modulate information processing and transfer within the visual system. Since both processes control the transfer of information from sensory memory to visual short-term memory (VSTM), a natural question is whether …
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A Spatial Attention Mechanism for Motion Prediction in Autonomous Driving
… μας αποτελεί ο Μηχανισμός Χωρικής Πυκνότητας (Spatial Density Module, SDM), ο οποίος μοντελοποιεί τον χώρο αλληλεπιδράσεων με ένα Μοντέλο Μίγματος Γκαουσιανών και χρησιμοποιεί την κανονικοποιημένη πυκνότητά του ως φίλτρο πάνω στους χάρτες προσοχής. Η προκύπτουσα παραλλαγή, Spatial Density …
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Specialized Signals for Spatial Attention in the Ventral and Dorsal Visual Streams
… stream functions in terms of their code for spatial attention, whose control was typically associated with the dorsal stream and prefrontal areas. We took advantage of recent fMRI studies that provide a systematic map of cortical areas modulated by spatial attention and suggest PITd, a …
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Cognitive and Auditory Factors Underlying Auditory Spatial Attention in Younger and Older Adults
… the auditory and cognitive aspects of auditory spatial attention in conditions in which the location of the target was uncertain. In all experiments, word identification was measured for target sentences presented with two competitor sentences. On each trial, the three sentences were presented …
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Long-Term Memory Biases Auditory Spatial Attention: Healthy and Impaired “Memory-Guided Attention”
Attention and memory may be impaired in individuals at-risk for Alzheimer’s disease (AD), though standard cognitive assessments typically study the two in parallel. In reality, attention and memory interact to facilitate processing, and thus a more integrative approach is required. Here, I used a …
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The Influence of Spatial Attention on Neuronal Receptive Field Structure within Macaque Area MT
Der Einfluss von räumlicher Aufmerksamkeit auf die Struktur rezeptiver Felder im superior-temporalen Kortex des RhesusaffenSelektive Aufmerksamkeit führt zu einer multiplikativen Verstärkung von Einzellzellaktivität im sensorischen Cortex. Modulation durch Aufmerksamkeit ist besonders ausgeprägt, …
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Orienting Of Visual-spatial Attention With Augmented Reality: Effects Of Spatial And Non-spatial Multi-modal Cues
… The results showed significant benefits of attentional cuing on visual search task performance as revealed by benefits in reaction time and accuracy from the presence of the haptic cues and auditory cues when displayed alone and the combination of the visual and haptic cues together. …
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Prism Adaptation Effects on the Attentional Window
… to affect lateral biases in the distribution of spatial attention in healthy individuals. The effects of prism adaptation on the size of the attentional window, the limited area of the visual field we attend to and extract information from without moving our eyes, are not fully elucidated. In …
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Electrophysiological systems underlying human domain-general cognition and selective attention
… support domain-general cognition and selective attention is crucial for uncovering the mechanisms that enable flexible cognitive processing across tasks. This thesis investigates the contributions of electrophysiological systems—including oscillatory, aperiodic, and evoked responses—to these …
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Space and Value in the Primate Amygdala and Basal Forebrain
… as well as cognitive ones, such as increasing attention towards that stimulus. Neuroscientists have long appreciated that the amygdala mediates spatially non-specific emotional responses, but it remains unclear whether the amygdala links motivational and spatial representations in a way that …
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Does Motor Attention Enhance Perception in Hemispatial Neglect?
Hemispatial neglect is a disabling post stroke disorder that affects spatial attention and severely limits functional recovery. This work evaluates the feasibility of using an augmented reality (AR) serious game to quantitatively assess and modulate spatial exploration in patients with hemispatial …
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Subitizing And Counting: Preattentive And Attentive Processing In Visual Enumeration
… into a general theory of visual perception and spatial attention, as espoused by Marr(1982), Ullman(1984), and Treisman(1988). In particular, it is argued that the rapid apprehension of number in the 1-4 range is parasitic on a preattentive limited capacity mechanism that individuates feature …
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The Impact of Expertise in Archery on the Attentional Biases of Perceptual and Representational Pseudoneglect
… represents a subtle yet consistent bias in our spatial attention towards the left half of space and away from the right which results in the pattern of bumping or other lateralised errors seen in the spatial attention literature (See Jewell & McCourt, 2000). Furthermore, this bias does not just …
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What and where : a Bayesian inference theory of visual attention
… theoretical framework described in this thesis, attention is part of the inference process that solves the visual recognition problem of what is where. The theory proposes a computational role for attention and leads to a model that predicts some of its main properties at the level of …
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Improving gesture recognition through spatial focus of attention
… multi- channel architectures. We show that when spatial attention is focused on the hands, gesture recognition improves significantly, particularly when the channels are fused using a sparse network. We propose an architecture (FOANet) that divides processing among four modalities (RGB, depth, …
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3D Seismic Interpretation of Turbidite-Sands from the Gulf of Mexico
… from Schlumberger was used in this research. A spatial attention was given to salt diapers. Their influence on sand accumulations and hydrocarbon traps were investigated. Two Pleistocene sands accumulations (4500-ft & 8500-ft) were examine thoroughly in this research. Time and amplitude maps …
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Deep learning models for defect and anomaly detection on industrial surfaces
… with convolutional neural networks and a spatial attention module, achieving a 99.42% accuracy on the TILDA dataset. In civil engineering, the DepthCrackNet model, optimized for pavement crack detection, attains mIoU scores of 77.0% and 83.9% on the Crack500 and DeepCrack datasets. In …
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Age-related similarities in the attentional visual field
… cluttered, and adaptive behavior often demands attention to multiple objects. Unfortunately, compared with young adults, older adults seem to show more difficulty in dividing attention across the visual field (e.g. Ball et al., 1988), an effect often interpreted as an age-related constriction of …
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Attention bias for negative semantic stimuli in late life depression and clinical research portfolio
… may have difficulties disengaging visual-spatial attention from negative information. Preliminary studies in depressed older adults provide evidence for the existence of biased attention to negative stimuli. However, the specific components of attention driving the detected bias effects in …
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