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 9 of 9 for “"perceptual task"”.
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Top-Down Control of Lateral Interactions in Visual Cortex
… subject to cognitive influences of attention, perceptual task and expectation. Previously it's been shown that the response properties of V1 neurons change to carry more information about behaviorally relevant stimulus features (Li et al. 2004). We hypothesized that top-down modulation of …
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Implicit Memory and Online Advertisement Priming
… mixed results on attentional requirements for perceptual implicit memory, some studies citing evidence for the need of attention, others citing the opposite. As well, research has been consistent in producing results showing that conceptual implicit memory has higher attentional demands than …
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Investigating social cognition and personal space through tactile event-related potentials in virtual reality
… in which participants engaged in a social or perceptual task. The videos were presented either in their near distance (.95m) or far distance (3.45m) whilst participants received tactile stimulation on their right fingers. I expected heightened neural activity to tactile stimulation during the …
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Pre-Saccadic Modulation of the Visually Evoked Potential
… for attended and unattended stimuli in three tasks: one involving saccades only, one involving saccades and a perceptual task, and one involving a perceptual task without eye movements. We found that it is unlikely that the primary visual cortex is the location at which visual processing is …
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High-level Cognitive and Neural Contributions to Conscious Experience and Metacognition in Visual Perception
… informational content of subjective ratings of perceptual clarity and confidence (Appendix A). We constructed a wide array of signal detection theoretic models capturing different hypotheses on the relationship between objective and subjective visual processing and performed a formal model …
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A Study in Texture Segmentation: Investigating the Role of Template Retuning in Perceptual Learning
… are recognized in observers performing perceptual tasks that may be the product of practice or the observer's familiarity with the task. These differences suggest the possibility of perceptual learning (PL), which could be linked to first-order information. The purpose of the present …
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Auditory brainstem response latency in noise as a marker of cochlear synaptopathy
… the effect of noise on wave-V latency predicts perceptual temporal sensitivity. Further, we show evidence that ABR wave-V latency in forward masking may be affected by ANF loss and is predictive of a listener's performance in a perceptual task related to speech intelligibility in noise. Our …
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Perception-based synthetic cueing for night-vision device rotorcraft hover operations
… it is unlikely that they will address all of the perceptual issues. The approach proposed in this thesis is to augment the NVD image with synthetic cueing, whereby the cues would emulate position and motion in an ecological fashion and appear to be actually occurring in physical space on which …
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Verbal ability, previous practice and load on short-term memory as determiners of differences in a complex learning task: an experimental study
… of individual differences arising from cognitive tasks, traditional psychometric tests were searched for a suitable perceptual task which could be varied slightly and administered to gauge learning effects produced by controlling independent variables. It also had to be suitable for analysis using …