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 14 of 14 for “"Visual Short-term Memory"”.
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Spatial Distortions in Visual Short-Term Memory
… genaue Position eines Zielpunktes auf dem Computermonitor nach einem kurzen Behaltensintervall reproduzieren. Dabei stellt sich heraus, daß ihre Erinnerung systematisch durch zusätzliche visuelle Landmarken verzerrt wird, die als räumliche Referenz dienen. Landmarken bilden Regionen hoher …
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Micro-affordances in visual mental imagery and visual short-term memory
… of the reachto- grasp action during on-line visual processing (Tucker and Ellis, 1998; Ellis and Tucker, 2000; and Tucker and Ellis, 2001). One property of these effects is that they have been shown to terminate once an object is removed from view (Tucker and Ellis, 2001). This thesis …
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Spiking and oscillatory correlates of visual short-term memory for multiple items
The richness of visual experience far exceeds our ability to remember what we have seen. However, it is unclear what neural mechanisms give rise to these limits to visual short-term memory capacity. Here, we measured neural activity in a change localization task, in which monkeys viewed two …
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The effect of interference and time on forgetting in visual short-term memory
‘Memory’ is a flexible cognitive system, adapting to suit the specific needs of the individual. Creating and losing memories helps to maintain the harmony of a complex set of neurological processes. However, the reason for losing memories has led to a contentious debate, especially in short-term …
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Neural mechanisms underlying the flexible and continuous allocation of visual short-term memory resources.
… has long been debated whether objects stored in visual short-term memory (VSTM) are maintained as discrete items or as a continuous resource. While much recent behavioral evidence has supported a continuous resource model, neurological support has lagged behind. In the current study, participants …
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The Contribution of Top -Down Information to the Capacity of Visual Short -Term Memory
Current theories of the capacity of visual short-term memory postulate fixed limits on the amount of information stored in memory. Both object- and information-based accounts provide structural limitations of storage in visual memory. The current paper challenges these notions of fixed limits by …
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Is there a K in capacity? Evaluating the discrete-slot model of visual short-term memory capacity
Visual short-term memory (VSTM) is a fundamental cognitive structure that temporarily maintains a limited amount of visual information in the service of current goals. There is active theoretical debate regarding how limits in VSTM should be construed. According to discrete-slot models of capacity, …
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A psychophysical investigation of human visual perceptual memory. A study of the retention of colour, spatial frequency and motion visual information by human visual short term memory mechanisms.
The aim of this thesis was to investigate how visual information is organised in perceptual short term memory, with special interest in colour, spatial frequency and velocity. Previous studies of VSTM have indicated the existence of specific memory mechanisms for visual attributes such as …
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Memory for structural information across eye movements
The visual world extends before us in all directions, but there are limitations on how much of the world can be perceived at any one time. To compensate, the eyes move around from point to point in space, and can be directed to objects or regions of interest. Since information is picked up from the …
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Toward a further understanding of object feature binding: a cognitive neuroscience perspective.
… on information processing and integration in the visual system and visual shortterm memory. From a review of the literature it is clear that there are three major competing binding theories, however, none of these individually solves the binding problem satisfactorily. Thus the aim of this …
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Change Detection Memory In Rhesus Monkeys and Humans
<p>Visual short-term memory (VSTM) is the storage of visual information over a brief time period (usually a few seconds or less). Over the past decade, the most popular task for studying VSTM in humans has been the change detection task. In this task, subjects must remember several visual items per …
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Flexibility in object-based selection
A well established finding in the field of visual attention is that attention tends to operate in an object-based manner (i.e., all features of attended objects, including task-irrelevant ones, tend to be co-selected, e.g., O’Craven et al.). However, recent evidence suggests that object-based …
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A Statistical Approach to Visual Masking and Spatial Attention
… vicinity of each other, a phenomenon called visual masking. Visual masking has been extensively studied to understand the dynamics of information processing in the visual system. Visual spatial attention is also known to modulate information processing and transfer within the visual system. …