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 39 for “"visual working memory"”.
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Limitations of Human Visual Working Memory
… study investigates limitations of human visual working memory (VWM). The experiments of the present work involve the experimental paradigm of change detection using simple geometrical objects in the form of rectangles of different colour, length, and orientation. It can be shown, that a …
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Structured representations in visual working memory
How much visual information can we hold in mind at once? A large body of research has attempted to quantify the capacity of visual working memory by focusing on how many individual objects or visual features can be actively maintained in memory. This thesis presents a novel theoretical framework …
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Statistically learned visual representations support visual working memory
Visual statistical learning (VSL) refers to the human ability to unintentionally extract statistical information from our environment. VSL has been proposed to have wide-reaching influence on a number of aspects of cognition. However, direct evidence that statistically learned information is used …
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Multiple Forms of Stimulus Representation in Visual Working Memory
These experiments demonstrated the existence of multiple levels of stimulus representation and their interactive nature. They also showed that the ERL method can be used to reveal different forms of stimulus representation across different time windows.
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Parietal contributions to visual working memory depend on task difficulty
The nature of parietal contributions to working memory (WM) remain poorly understood but of considerable interest. We previously reported that posterior parietal damage selectively impaired WM probed by recognition (Berryhill & Olson, 2008a). Recent studies provided support using a neuromodulatory …
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Visual working memory supports perceptual stability across saccadic eye movements
… movements. To create a stable perception of the visual world we must stitch together the gaps in visual input caused by this suppression. Early theories of perceptual stability proposed that information about the position of the eye could be used to cancel out changes in the retinal information …
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The contribution of visual working memory to priming of pop-out
… modulation, essentially eliminating the role of memory representation as an explanation for the underlying mechanism of PoP. The current study aimed to test this proposition to determine whether PoP is truly independent of guidance based on visual working memory (VWM) by adopting a dual-task …
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Role of NMDA in the Visual Working Memory of the Macaque Monkey
Working memory refers to the ability to retain information for short periods of time to guide future behavior. This type of short-term memory has been shown to play an important role in mental disorders such as schizophrenia and therefore further investigations into the neural basis of this …
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Spatial and temporal processing biases in visual working memory in specific anxiety
… assumptions concerning anxiety-linked biased memory for threat are less convincing; based on the shared tendency for avoidance of deeper elaboration in anxiety disorders, some models predict memory biases only for implicit memory tasks (Williams et al., 1997) or even disclaim the relevance of …
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Visual Working Memory and Visual Selective Attention among Survivors of Pediatric Acute Lymphoblastic Leukemia (ALL)
… study investigated the relationship between visual working memory (VWM) and visual selective attention in survivors of pediatric acute lymphoblastic leukemia (ALL) either at high-risk or low-risk for neurocognitive impairments based on their treatment regimen and non-cancer controls. Previous …
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Reasoning and memory : multiple simple response strategies are used in visual working memory for color-orientation binding /
… how effectively people use the information in working memory (WM) when reasoning about that information is required in a recognition memory task (Chen and Cowan, 2013; Hardman and Cowan, 2016). In the featurematching task, a WM task, deductive reasoning (Deduction) can be used to determine that …
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Investigating the Effects of Perceptual Complexity versus Conceptual Meaning on the Neural Correlates of Visual Working Memory
Previous research has demonstrated greater visual working memory (VWM) performance for real-world objects compared to simple features. Greater amplitudes of the contralateral delay activity (CDA) have also been noted for meaningful stimuli, despite being thought of as a neural marker of a fixed …
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Electrophysiological correlates of multiple object processing
… two stages or mechanisms related respectively to visual attention and visual working memory (WM). The early stage of multiple object processing – individuation – is a function of attention that allows the visual system to represent multiple objects simultaneously by selecting a limited number of …
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Age Related Decline in Memory: Examining the Mediation Effect of Processing, Executive Functioning and Intelligence in Normal Adults
… have examined the mechanisms that underlie memory change among younger aging individuals. As a result, it is unclear whether relevant mediating variables have been excluded from early research on age-related memory decline, or to what extent rehabilitative strategies are applicable as early …
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Relations between measures of attention and memory in the assessment of children with attentional difficulties
… functions dependent upon attention, learning and memory, are characteristic deficits in LD children, and have been documented as correlated weaknesses in ADHD and TBI populations. However, few investigations have examined the relation between these cognitive functions, in terms of understanding …
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Investigating the Role of Working Memory on Emotion Recognition Accuracy in Emerging Adults
… were used to assess whether different facets of working memory predicted emotion recognition accuracy. It was hypothesized that emotion recognition accuracy would be higher for facial compared to vocal stimuli, with the lowest accuracy expected in the dynamic vocal condition. Additionally, it was …
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Keeping visual-auditory associations in mind: The impact of detail and meaningfulness on crossmodal working memory load
… objects have been found to take up more visual working memory---as measured by lowered change-detection accuracy with such stimuli---than simple colored shapes (Treisman, 2006; Xu, 2002). While verbal working memory studies have similarly shown reduced apparent capacity for longer words …
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Working Memory and Attention as Predictors of Processing Speed in Elementary School Students: A Developmental Study
… that Processing Speed (PS), Attention, and Working Memory (WM) are major cognitive functions that collaborate to achieve a coherent cognitive system. The aim of the current study was to improve the conception of how these cognitive functions interrelate. The study addressed two main …
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