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 20 of 22 for “"Pupil dilation"”.
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Sexual Arousal and Mental Health in Bisexual Men
… of women and men while their genital arousal and pupil dilation were recorded. 56 of these men also completed a survey of their mental health problems. Bisexual genital arousal was most common in men who identified as bisexual-leaning-straight. Mental health problems did not systematically vary …
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Neural Mechanisms For Learning In Dynamic Environments
… errors enhanced learning rates and induced pupil dilation. Among different measures of physiological arousal (pupil dilation, skin conductance, heart rate and respiration rate), only pupil dilation consistently predicted trial-by-trial learning rates in both environments. Furthermore, pupil …
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Emotion versus Motivation: Probing Dissociable Effects on Cognitive Control Through Task Performance, Pupillometry Methods, and Individual Differences
… proactive and reactive cognitive control. Pupil dilation during task performance was measured using high-resolution pupillometry as a secondary, high temporal-resolution measure of cognitive dynamics, and individual difference measures: both personality and cognition-related) were collected …
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The tell-tale body: investigating the intertwined relationship between social cognition and visual perception through physiological indices.
… autonomic responses - skin conductance, pupil dilation, and facial EMG - both before and after conscious awareness. Social skills were assessed through self-report questionnaires. Our findings revealed distinct physiological activation patterns across stimuli. Emotional faces elicited the …
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Measuring children’s sensitivity to phonological detail using eye tracking and pupillometry
… paradigms suitable for infants: single-picture pupillometry and intermodal preferential looking. Such paradigms have the potential to uncover lexical knowledge that may be masked otherwise due to cognitive limitations. The study reported in Chapter 2 obtained a differential response in pupil …
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Predicting Inattentional Blindness with Pupillary Response in a Simulated Flight Task
… who reported higher task demand had increased pupil dilation and subjects with larger pupil dilation were more likely to detect the runway incursion. These results show eye tracking may be used to identify periods of reduced unexpected visual stimulus detection for possible real-time IB …
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Exploring the applicability of implicit relevance measures in varying reading speed for adaptive I.R. systems
… length of forward saccades), and physiology (pupil dilation, electrodermal activity). Based on the limited number of participants at our disposal we study how these measures react when addressing documents at three different reading rates. Most of the fixation-derived features are reported to …
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Noradrenaline: active in arousal, but not for the hippocampal-neocortical dialogue
… active when the mice are aroused as indicated by pupil dilation. Parsimony suggests that noradrenaline is active in arousal but not in memory consolidation.
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The Discordant Development of Sexual Orientation in Identical Twins
… in sexual arousal such as genital response or pupil dilation patterns while viewing sexual stimuli. Chapter 3 focuses on these responses in identical twin pairs with discordant sexual orientations. Finally, differing intrauterine environments during the early development could result in a …
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Evaluation of workload estimation techniques in simulated piloting tasks emphasizing mediational activity
… measures (pulse rate variability and pupil dilation). A sensitive technique was defined as a technique which indicated statistical differences of scores across the three mediational load levels. An intrusive technique was defined as a technique which significantly changed the primary …
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Biomechanical characterization and computational modeling of the anterior eye
… interaction in the anterior eye during dilation. The iris is composed of three constituent components: the stroma, the sphincter iridis, and the dilator pupillae. To quantify the relative stiffness of different sections of the iris, mechanical indentation tests and histological analysis …
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Acetylcholine dynamics in the retrosplenial cortex during spatial uncertainty
… a gradual tonic rise in ACh, mirrored by pupil dilation. Critically, unexpected change under high expected uncertainty elicited both a strong phasic peak and a sustained ACh response, suggesting multiplexed coding of prediction error and expected variance. Two-photon imaging showed that …
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Influences of androgenisation and personality on female sexual orientation, behaviour, and arousal
… arousal, reflected in genital response and pupil dilation to sexual stimuli, are related to the sex difference in prenatal androgen exposure, reflected in a putative biomarker, the second to fourth finger digit ratio (2D:4D). In Chapter 3, I examined whether homosexual women's male-typical …
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Distinguishing moral disgust and anger using pupillometry and responses to economic behaviours
… distinguishing moral disgust from moral anger: pupillometry and an economic game. First, across two studies, we found that self- reported feelings of disgust, but not anger, predicted significant pupil dilation to emotionally engaging sounds and images. Second, we used this method to investigate …
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Improving visibility of latent stains on dark fabric: dark adaptation and stroboscopic light sources
… human eye adapts to low light conditions through pupil dilation and rod cell activation. This study evaluates the Crime-lite Eye®, a device designed to help forensic scientists determine their level of dark adaptation before commencing an ALS examination. When tested, the use of the Crime-lite …
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Exploring the utility of pupillometry as a biomarker for relationships between early life stress, emotion regulation, and cognition
… tools are not readily available. Recently, pupillometry has been recognised as a novel, non-invasive approach to identify potential abnormalities in cognitive and emotional functioning linked to ELS and stress-induced alterations in the locus coeruleus-norepinephrine (LC-NE) pathway. …
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Central and peripheral mechanisms of pain modulationthe role of the Locus coeruleus and pupillary dynamics in neuropathic and inflammatory pain
… the contribution of the LC as a central node and pupillary dynamics as a peripheral readout, with the ultimate goal of establishing pupillary responses as a translational biomarker for the assessment of pain and the efficacy of analgesic interventions. Three complementary studies were designed to …
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Experiential and Neurobiological Influences on Economic Preferences and Risky Decision Making
… model to capture regret, we examine changes in pupil diameter of participants performing a sequential investing task. By manipulating task uncertainty, we show that pupil dilation is positively correlated with both asset price variance and regret. In addition, pupil linked arousal is positively …
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Multi-Objective Control for Physical and Cognitive Human-Exoskeleton Interaction
… task, and cognitive workload, measured through pupil dilation, are evaluated to significantly show that high-assistance operation can lower the cognitive load experienced by a user alongside the physical assistance provided. Automatic adjustment in autonomy works to allow this assistance while …
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