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 “"Population coding"”.
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Population Coding In Laminar Cortical Circuits
… questions in neuroscience is to understand how encoding of sensory inputs is distributed across neuronal networks in cerebral cortex to influence sensory processing and behavioral performance. The fact that the structure of neuronal networks is organized according to cortical layers raises the …
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Impact of Brain State On Visual and Prefrontal Population Coding In Behaving Animals
… V4, a mid-level visual region, and that visual encoding of color is enhanced during locomotion. Finally, we recorded visual responses in a rapid adaptation paradigm and found that, while adaptation generally reduces correlations and improves stimulus encoding by the population, these effects are …
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Distortions in Perceived Direction of Motion Predicted by Population Response in Visual Cortex
… of moving objects in the activity of large populations of cortical neurons that respond preferentially to the direction of stimulus motion. Here I employed in vivo voltage sensitive dye (VSD) imaging to explore how abrupt changes in the trajectory of a moving stimulus impact the population …
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Bio-inspired error-tolerant and energy-efficient signal processing
… inspirations from biological methods, such as population-coding, and apply these methods to a canonical problem of non-coherent (unknown phase) frequency estimation. Energy efficiency is achieved using low cost, overlapping band-pass filters rather than conventional non-overlapping band-pass …
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The Impact of Cortical State On Neural Coding and Behavior
… the state of cortical networks influence sensory coding in neural circuits and the behavior of the animal are unknown. To shed light on this issue, we conducted multi-unit electrophysiology experiments in visual areas V1 and V4 of behaving monkeys. First, we studied the impact of neural population …
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Temporal and spatial contextual modulation of walking direction in biological motion
… adaptation technique to investigate the sensory coding of perceived walking direction, and finds that adaptation to a specific walking direction results in repulsive perceptual aftereffects. The observed tuning profiles are well explained by a population coding model, in which perceived walking …
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Neural circuits for solving the cocktail party problem in mouse auditory cortex
… known to contain both excitatory cells and subpopulations of inhibitory interneurons, the roles of which can be probed in vivo with optogenetic techniques. Motivated by these past results and the optogenetic tools readily available in the mouse model, I present experimental and computational …
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Normalization Among Heterogeneous Population Confers Stimulus Discriminability on the Macaque Face Patch Neurons
… a high-dimensional space spanned by the neural population. We showed that this was because neuronal population was quite heterogeneous, yet changing response systematically as stimulus parameter changed. Few neurons showed MAX-like behavior. These findings were explained by divisive …
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On the High-Dimensional Geometry of Neuronal Population Dynamics
… fundamental questions on how the neuronal population code enables robust yet flexible computation from the highly variable activities of single neurons. Here, we utilized large-scale optical imaging to investigate how neuronal population dynamics are structured across diverse brain regions …