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 10 of 10 for “"Early visual processing"”.
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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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Experience and perception
… that associative learning can affect relatively early visual processing. The second section examines the role of linguistic categorization in color judgments, finding that language can play an online role even in a relatively simple color discrimination task. The final section examines how …
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Parallel processing of efficient, heterogeneous visual search with real-world objects
… work in our lab has demonstrated that efficient visual search has a reaction time by set size function that is best characterized by logarithmic curves, and the steepness of these logarithmic curves is determined by the similarity between target and distractor items (Buetti et al., in press). …
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A Modular Computational Framework for Integrating Motion and Chromatic Representations in Mice Retina
… in the mouse retina. Although motion and color processing have been extensively studied, they are typically characterized using different experimental paradigms and incompatible representational forms. Motion sensitivity is described through spatiotemporal receptive fields, while chromatic …
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The role of Attentional Binding in Hallucination Proneness
… proneness, particularly under tightly controlled visual tasks, remains limited. Aim: This thesis investigates how hallucination proneness affects early visual processing, attentional binding, and object categorisation as a function of perceptual load, exposure duration, stimulus category (living …
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Attention in a meaningful world: brain responses to behavioral relevance
While it is known that primitive, low-level visual stimuli such as abrupt visual onsets or luminance changes can bias attentional orienting without willful intent on the part of the observer, comparatively little is known about how attention functions in rich, dynamic, meaningful contexts, such as …
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Seeing by moving: revisiting pattern vision through fixational eye movements
Visual perception is often conceptualized as the analysis of static images which are acquired during fixations. These images are then spatially decomposed into their basic components, which form the fundament of visual perception. Understanding these spatial mechanisms has been a central aim of …
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Spatial mechanisms in the recovery of visual feature conjunctions
… and behavioural evidence suggests that in both early visual processing and memory many of the component features of an object are independently represented in the visual system. The unity of visual experience appears to be dependent upon the recovery of feature conjunctions. The mechanism(s) …
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Light Dance: Beyond the Dichotomy of Light and Vision
… technologies and methods, Light Dance creates a visual environment in which light is perceived as a reflexive experience of vision, an inversion of our ordinary visual experience. These Light Dance experiences—shaping as they do primary perceptions of space and time through the manipulation of …