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 17 of 17 for “"Perceptual decision making"”.
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Neural Substrates of Human Perceptual Decision-Making
Perceptual decision-making describes the process of choosing one of at least two response alternatives based on sensory evidence. This sensorimotor process underlies a range of human behaviours and has been studied extensively by both psychologists and neuroscientists. There is now a consensus, …
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The Neural Computations In The Caudate Nucleus For Reward-Biased Perceptual Decision-Making
Decision-making is a complex process in which our brain has to combine different sources of information, such as noisy sensory evidence and expected reward, in appropriate ways to obtain the outcome that satisfies the decision-maker. Despite various studies on perceptual decision-making and …
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Biologically motivated reinforcement learning in spiking neural networks
… Algorithm (EA), when an agent is tasked with making decisions in response to noisy stimuli (perceptual decision making). By proposing a general framework which captures many proposed biologically feasible phenomenological synaptic plasticity rules, including classical SpikeTime-Dependent …
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Sensorimotor transformation and information coding across cortex during perceptual decisions
Perceptual decision-making is an important and experimentally tractable paradigm for uncovering general principles of neural information processing and cognitive function. While the process of mapping sensory stimuli onto motor actions may appear to be simple, its neural underpinnings are poorly …
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Perceptual and cognitive influences on decision making and the activity of single neurons in the superior colliculus and frontal eye field
… On a daily basis we are faced with innumerable decisions based on highly salient information: Which bottle is the shampoo? Which fruit should I select for consumption? Should I move left or right to avoid hitting the obstacle directly in front of me? To accurately make these choices we must …
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Exploring Interactions Between Attention and Perception in Saccadic Eye Movements and Frontal Eye Field Cell Responses
… every second, but the process leading up that decision involves multiple neuronal mechanisms that are at least partially dissociable. Perceptual decision making is the interplay between perception of the visual scene, attention to salience and priority, and the formulation of a plan of action. …
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Mechanics of Stimulus & Response Generalization in Signal Detection & Psychophysics: Adaptation of Static Theory to Dynamic Performance.
The area of perceptual decision-making research seeks to understand how our perception of the world affects our judgment. Laboratory investigations of perceptual decision-making concentrate on observers' ability to discriminate among stimuli and their biases towards reporting one stimulus more …
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Dynamics of human decision-making : vestibular perception and neural correlates
When making daily decisions, people naturally ask two questions: how soon can I make a decision, and is it a good decision? In experimental setting, humans can subjectively yet quantitatively assess choice confidence (i.e. how good) based on their perceptual precision even when a decision is made …
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Roles of reward, memory, and cognitive control on visual perceptual learning and decision-making
A prevailing hypothesis of visual perceptual learning (VPL) is that for a feature to be learned, focused attention must be directed to that feature. Along these lines, top-down, task-related factors are also required for such learning to take place. The first aim of this thesis was to challenge …
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Behavioural principles underlying navigational decision-making in Drosophila melanogaster larvae
An animal’s survival depends on timely decisions informed by sensory information. Studies in humans and large model organisms have elucidated auxiliary roles of large brain regions in the evolution of such perceptual decisions. What remains challenging is acquiring a detailed understanding of the …
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Dissociating the brain regions involved in processing objective and subjective performance
When making perceptual decisions, easier tasks produce higher task accuracy and, naturally, higher confidence levels. We recognize the two distinctive cognitive processes, but it is challenging to judge exactly how decision and confidence processes affect different brain regions. In the current …
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NEURAL CORRELATES OF RANDOM AND INFORMED SACCADIC CHOICES IN THE MACAQUE FRONTAL EYE FIELDS AND CENTRAL THALAMUS
… saccade target selection, neural correlates of perceptual judgment and motor choice were evaluated for visuomotor neurons recorded in the FEF and OcTh. Monkeys performed a compelled-saccade task, a two-alternative forced-choice task that requires rapid perceptual judgments (color discrimination) …
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Behavioral and Neural Substrates of Decision-Making Under Perceptual and Reward Uncertainty: The Role of Task Structure
Real world decision-making requires simultaneously determining what we are observing in our environment (perceptual decision-making; PDM) and what the stimuli and actions are worth (reward-based decision-making; RDM). There is evidence of a bi-directional relationship between reward and perceptual …
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Role of Mouse Visual Cortex in Perception of Stimulus Features
… computation that transforms sensory encoding to decision choice, I next use visual adaptation as a tool to determine a decoder adopted by the mouse to discriminate orientation (target versus. distractor orientation) via a combination of in vivo calcium imaging and modeling approaches. This …
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Neuropsychological and biological mechanisms of checking in OCD and clozapine induced Schizo-OCS
… testing procedure to measure checking, based on perceptual decision-making under a time constraint. This was administered together with other cognitive tests to patients with OCD, clozapine treated schizophrenia patients without and with obsessive compulsive symptoms, and a healthy volunteer …
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The Pragmatics of Confidence in Perceptual and Value-based Choice
… report a subjective sense of confidence in a decision before knowing its outcome. Such confidence judgements are positively correlated to accuracy in perceptual and memory tasks, but the strength of this relationship (known as metacognitive accuracy) differs across people and contexts. …
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Multisensory Integration in adults with Attention-Deficit/Hyperactivity Disorder
… but with an additional task demand, namely a perceptual load visual search task. As a result, MI was similar in ADHD patients compared to healthy controls. However, application of the race model revealed a difference in sensory accumulation at high perceptual load in ADHD. Taken together, the …