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.
Results
Showing 1 to 20 of 40 for “"Spatial processing"”.
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Lost in trauma: post-traumatic stress disorder, spatial processing and the brain derived neutrophic factor gene.
… demonstrated that in cases of PTSD allocentric processing was impaired. This thesis pursued this line of enquiry and assessed the impact of PTSD and of any trauma exposure on navigation performance using a static perspective taking task and a more ‘active’ navigation paradigm. The study also …
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Language, thought and deafness : conceptual and methodological issues, with reference to visual-spatial processing, control of attention and sign language
… perspective on normal human information processing; the result of functional adaptation to the environment. Qualitative and quantitative methods of data analysis, are used to examine process and structure underlying outcome. The approach is tested by examining control of attention and …
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Case Studies in Invertebrate Visual Processing: I. Spectral and Spatial Processing in the Early Visual System of Drosophila melanogaster II. Binocular Stereopsis in Sepia officinalis
This thesis addresses two aspects of visual processing in two different invertebrate organisms. The fruit fly, Drosophila melanogaster, has emerged as a key model for invertebrate vision research. Despite extensive characterisation of motion vision, very little is known about how flies process …
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A Neuropsychological Investigation of Cerebral Dominance and Dyslexia
… usual manner, that is, with language or verbal processing specialized in the left cerebral hemisphere, and spatial processing in the right. According to her theory, in dyslexics, spatial processing is bilateral, located in both hemispheres, which interferes with the linguistic, sequential …
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Target detection in left and right hemispace
Traditionally, spatial processing has been considered the domain of the right hemisphere(e.g., Milner, 1974; Sperry, 1974). Recent research however, suggests that both hemispheres may play a role in analyzing spatial information with each contributing in a different manner (e.g., Robertson & Lamb, …
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An Analysis of the Influence of Age and Ionizing Radiation on Cognitive Performance
… in human performance on tasks involving spatial processing increase with age in persons who have been exposed to ionizing radiation, but only in efficiency scores. However, no significant age/radiation dose interaction was evident from the ANOVA tests.</p>
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Improving Signal Clarity through Interference Suppression and Emergent Signal Detection
… suppression and emergent signal detection. Spatial processing is often used to suppress interferers that are spatially distinct from the signal of interest. If the signal of interest and the interferer are statistically independent, blind source separation can be used to statistically …
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Spatial -Temporal Multiuser Receivers for Cdma-Based Communications
… multiple element antennas with temporal processing. We show that spatial techniques that suppress multiple-access interference originating from adjacent cells will increase the potential for capacity improvement of temporal interference cancellation and will also validate the white …
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Electrophysiological Correlates of Cognitive Processing in Adolescents Reporting Psychotic-Like Experiences
… an Active Auditory Oddball Task, an Implicit Spatial Memory Task and a Spatial Working Memory Task. The present thesis is the first study to examine resting state data and the electrophysiological correlates of auditory and spatial processing in adolescents reporting PLEs. In Chapter 3 the …
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The effect of alcoholism on visuo-spatial perspective taking
… with deficits in conscious, deliberate emotional processing and humour processing. However, ToM encompasses many social functions, including the ability to take another’s visual perspective, but little is known about how cognitive deficits caused through alcoholism may affect these processes. Aim: …
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3D geographic model vs street view panorama a cognitive study on navigation in different Google maps representations
… is also preferred by people according to their spatial processing type preference and the wayfinding task type they perform. After evaluating our findings from the experiments, we propose a design of a new representation with facade images augmenting a 2D satellite map. We believe this design …
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Cognitive Function in the Alcohol Addiction Treatment Population
… cognitive deficits, such as problems with spatial processing, decreased executive functioning, impaired verbal fluency, poor working memory, response inhibition, and social problems such as aggression and social deviance. In order for patients to benefit from treatment, they must be able to …
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Representation of Whole-body Navigation in the Primary Sensorimotor and Premotor Cortex
… for the severely paralyzed. In addition,</p><p>spatial information in these areas during navigation can potentially can incorpo-</p><p>rated to bolster BMI performance. However, the study of spatial representation</p><p>and navigation in the brain has traditionally been centered on the …
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Radar Space-Time Processing for Range-Folded Spread-Doppler Clutter Mitigation
… multiple receive elements, spatial processing can be preformed to exploit the correlation between spatial frequency and Doppler shift produced by ionospheric winds. Adaptive beamforming is known to provide asymptotically optimal array gain if sufficient training data is …
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Recurrent neural networks in cognitive and vision neuroscience
… dynamics of recurrent networks with the spatial processing capabilities of convolutional neural networks, creating a unified model that retains biological plausibility while achieving high performance in complex visual tasks. Together, these contributions advance the training of realistic …
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Mini-Maps, Crucial or Controversial: Assessing the Influence of Perceived Spatial Orientation and Cognitive Mapping Performance on Video Game User Experience
… is limited, however, is the relationship between spatial cognition, specifically the domains of spatial orientation and cognitive mapping and their effects on video game user experience for games employing visual navigational aids. Video game user experience is influenced by many factors such as …
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Medium Access Control Protocol for Satellite Constellations
… and fail to take advantage of advanced antenna processing techniques, including phased array nulling, as well as capacity sharing via inter-satellite links. We present both an offline linear program and a novel online greedy MAC protocol to assign satellite resources to users using either …
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Concepts and Schemas: Representational Format for Structured Knowledge
… have uncovered parallels between the neural processing of physical space and of abstract knowledge, such that the established neural mechanisms for spatial navigation may also shed light on how we represent conceptual knowledge. In this thesis, we present a set of behavioural experiments …
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Hippocampal Output to the Septum Regulates Locomotion and Exploration
… models. Therefore, we may be able to ameliorate spatial processing deficits and motor symptoms in patients with memory impairment or psychosis and find therapeutic treatments for them.
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