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 18 of 18 for “"Naturalistic stimuli"”.
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Neural speech tracking in quiet and noisy listening environments using naturalistic stimuli
… clean speech stimulus versus speech in naturalistic noise in 17 participants with typical hearing. We employed linear encoding models to assess the degree of neural tracking to specific speech features. These models allow us to predict neural activity from EEG based on specific acoustic …
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Predicting Task Functional Localizers Using Naturalistic fMRI
… resonance imaging (fMRI) data collected during naturalistic stimuli has shown promise for predicting individual traits, biomarkers of disease and functional brain localizations, potentially offering advantages over traditional resting-state approaches. This study investigated the use of …
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Comparing Human Perception to Computational Classifications of Lexical Tones
… computational model tested the categorization of stimuli taken from both citation and continuous contexts of Thai tonal data, in order to compare the performance of the computational model on both clear and naturalistic stimuli. Two perception experiments were also conducted, involving human …
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The neural correlates of social and non-social decision-making in resolving complex, dynamic uncertainty
… challenge for social cognition research. Naturalistic stimuli are a powerful tool for modeling these processes, but the cognitive and neural dynamics that govern real-time appraisal during complex narratives remain underexplored. Across three studies, this dissertation investigated how …
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An exploration of conceptual similarity in multiple target visual search
… studies use dual target trials and abstract stimuli. A study by Laderoute (2021) using varying target set sizes and naturalistic stimuli found better performance for many-target search, with per-item RTs that decreased as target set size increased. Interestingly, increasing the perceptual …
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Aging and Event Segmentation
… age-related memory decline using simple stimuli (e.g., words, pictures), but fewer studies have used naturalistic stimuli (e.g. narratives, films) which may help to understand how age affects memory for more complex events. In the current thesis, I employ concepts from the event cognition …
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Sensory representations optimized for the natural environment
… the efficient coding principle to fully naturalistic stimuli by building models of natural image statistics and image-computable ideal observers to quantify the information encoded by the early stages of visual encoding. I show how features of the retinal encoding can be explained by an …
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Neural processing of semantic content in movies
<p>Naturalistic stimuli, such as movies, contain interacting, multimodal and semantic features and allow for free exploration through eye movements. The full extent of neural responses to features such as motion, film cuts and eye movement behavior has not been established. The main hypothesis of …
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Investigating default mode network activation during external task switches and movie watching
… its recruitment during various transitions in naturalistic stimuli, such as movies. The findings indicate that DMN subnetworks are sensitive to objective transitions in stimuli and subjective event boundaries, supporting the DMN’s role in interpreting continuous external events and detecting …
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The Functional architecture of language comprehension mechanisms : fundamental principles revealed with fMRI
… through datadriven, model-free paradigms using naturalistic stimuli; and (iii) statistical rigor, by explicit comparison of functional profiles across regions. Using this approach, I first contrast two cortical networks engaged in comprehension: one, the "high-level language network", is …
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The role of verbal processing in face recognition memory
… in a recognition memory task using more naturalistic stimuli. The main findings indicate first, that mechanisms underlying face processing appear to be complex, and simple processing associations (configural-visual and featural-verbal processing) cannot be made. Second, face encoding …
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Sample Path Analysis of Integrate-and-Fire Neurons
… the response of assemblies of neurons to complex naturalistic stimuli. If neural activity can be assumed to be primarily driven by the stimulus at early stages of processing, the intrinsic activity of neural circuits interacts with their high-dimensional input to transform it in a stochastic …
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Cognitive processing during sleep: the role of signal significance and participant characteristics
… the response of sleeping young adults to naturalistic fire cues including a naturalistic house fire sound, a flickering light, and a combination of the two in two alcohol conditions (sober and .08 BAC). Major findings from the series of studies include that alcohol significantly affected …
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When the Brain Plays a Game: Neural Responses to Visual Dynamics during Naturalistic Visual Tasks
… is known about the processing of complex dynamic stimuli experienced in everyday scenarios. Traditional investigations employ event-related paradigms that involve presentation of simple stimuli at select locations in visual space and discrete moments in time. In contrast, visual stimuli in …
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Using new tools to study the neural mechanisms of sensation: Auditory processing in locusts and translational motion vision in flies
… I demonstrated the ability to create more naturalistic stimuli and interactive virtual visual landscapes. Lastly, I used this new visual display system to explore a newly discovered cell-type that had been implicated in higher-order motion processing from a large genetic screen of …
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Finding Common Ground: The Common Marmoset as a Model to Accessing and Providing Insight into the Social Brain
… face processing. Faces form a unique category of stimuli that bridge visual perception and social cognition. They are processed in dedicated areas of cortex, face patches, which are organized into an interconnected network. While insight into neurons within face patches has been explored through …
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Identification of Dendritic Processing in Spiking Neural Circuits
… transformations performed on one or more input stimuli. In the case of multiple stimuli, it can also describe the cross-coupling, or interaction, between various stimulus features. The behavior of the dendritic stimulus processor is fully captured by one or more kernels, which provide a …