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 16 of 16 for “"Top-down processing"”.
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The Dominant Listening Strategy of Low-Proficiency Level Learners of Mandarin Chinese: Bottom-Up Processing or Top-Down Processing
… listeners use the two main listening processes (top-down processing and bottom-up processing). In this study, 31 low-proficiency level Mandarin Chinese as a foreign language (CFL) learners from Brigham Young University took the Chinese Computer Adaptive Language Test (CCALT) and listened to four …
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Sensation vs. perception : a study and analysis of two methods affecting cognition
… (outside stimulations/objective/bottom-up processing in neuroscience) or through perception (arousing background knowledge of inner mind/subjective/top-down processing in neuroscience). Similar effects can be reached through different ways. For example, to make something disappear, blending …
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Diagnosing L2 English Learners’ Listening comprehension abilities with Scripted and Unscripted Listening Texts
… listening texts. Studies in which such processing has been discussed have lacked detailed diagnoses of how bottom-up and top-down processing interactively affect listeners’ comprehension. This study was designed to show how listeners’ process and comprehend texts, with a focus on how …
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Effects of bottom-up versus top-down cueing on conjunction search in 3-month old infants
… are theorized to require both bottom-up and top-down attentional resources. Because infants have been shown to perform a feature search like that of adults but have been shown not to be able to perform a conjunction search in a similar manner, the current study attempted to show that bottom …
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Dissecting emotion : towards a functional neuroimaging probe for affective disorders
… that the amygdala mediates ?bottom-up? processing driven by emotional stimulus content, and that the ventral prefrontal cortex and anterior cingulate cortex mediate ?top-down? processing driven by explicit knowledge or intention. In the first experiment, we tested whether matching faces …
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Diagnostic Palpation in Osteopathic Medicine: A Putative Neurocognitive Model of Expertise
… medicine is associated with changes in cognitive processing. Chapter 2 and Chapter 3 review, respectively, the literature on the role of analytical and non-analytical processing in osteopathic and medical clinical decision making; and the relevant research on the use of vision and haptics and the …
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The role of the magnocellular system in implicit cognition
… to be involved in rapid but coarse information processing which is a basis for certain kinds of automaticity in information processing, such as reading or visual object recognition. The question this research addressed concerns visual perceptual processes which are not easily controllable and …
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N200 and P300 Evoked by Stimuli Straddling Category Boundary in Lexical Context
… Findings may provide evidence for bottom-up or top-down processing of speech. Methods: On a seven step series of the /bi/-/pi/ continuum, a two-forced choice labeling test was administered in two conditions: /bi/ context (e.g. bee sting) and /pi/ context (e.g. pea soup). From the labeling …
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Challenges teachers face when teaching grade 4 English first additional language (FAL) reading in rural schools of the Dzindi circuit in the Vhembe district
… to reading called phonics, the cognitive view (top-down processing), constructivism and the metacognitive view.
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Learning novel vowel contrasts: experimental methods in classroom applications
… and to circumvent the effects of frequency and top-down processing. Participants completed pre- and post- tests on discriminating vowels in real word minimal pairs and nonce word minimal pairs. Vowel perceptual training took place over the course of six days wherein each day’s training consisted …
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Individual differences of the startle response: implications of attention and arousal
… of their startle response. More specifically, if top-down controlled attentional processes mediated the startle response under such conditions, it was expected that those with less distractibility would exhibit less startle during the ignore task than those who were more distractible. If arousal …
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An eye tracking study of sentence reading in aphasia: influences of frequency and context
… and context are related to both early and late processing stages of reading. However, differences were found between groups in a later processing stage where the aphasia group relied more on the context (top-down processing support) than the control group. The second experiment revealed that …
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Neuronal Nicotinic Receptor Dynamics in Medial Geniculate Body Neurons of Young and Aged Fischer Brown Norway Rats
… in knowledge-based optimization of input. This top-down processing is mediated in part by cholinergic systems, which direct attention to relevant incoming sensory information. The primary cholinergic input to the MGB is a large cholinergic projection from the pontomesencephalic tegmentum. The …
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The Top-Down and Bottom-Up Processing of Ongoing Speech by Aphasic Subjects
… the manner in which aphasic subjects utilized top-down and bottom-up levels when processing ongoing speech. In individual sessions, 30 subjects (10 aphasic, 10 normal and 10 brain-damaged control) heard 288 test sentences which contained one member of one of 12 phonemically similar word pairs …
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Quantentransport in III-V-Halbleiternanosäulen
… nanocolumn phase interference diodes. Using new top-down processing methods, these devices have been miniaturized to a scale not reached until now. The devices with the smallest lateral dimensions show new quantum transport phenomena which were not observed so far and can be used for developing …
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Multisensory Integration in adults with Attention-Deficit/Hyperactivity Disorder
… integrated rather early - so-called bottom-up processing, more complex stimuli are integrated rather late in a top-down processing. Bottom-up integration is almost automatic and involves primary sensory areas and superior colliculi, whereas top-down integration involves higher-order association …