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 28 for “"autonomic nervous system (ANS)"”.
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Multivariate Discrimination of Emotion-Specific Autonomic Nervous System Activity
The present study investigated autonomic nervous system (ANS) patterning during experimentally manipulated emotion. Film clips previously shown to induce amusement, anger, contentment, disgust, fear, and sadness, in addition to a neutral control, were presented to 34 college-aged subjects while …
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Lateralized Induction of Cardiovascular Responses: Exploring Asymmetric Autonomic Regulation
There is clear evidence that the autonomic nervous system (ANS) is lateralized at both the peripheral as well as the central levels of the nervous system. Both the vagus and the sympathetic ganglia asymmetrically innervate the sino-atrial node and the myocardium of the heart. This lateralization …
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Respiratory Sinus Arrhythmia and Restricted Repetitive Behaviors in Autism Spectrum Disorder
… theory. Both of these theories posit the autonomic nervous system (ANS) as being dysfunctional in ASD, resulting in the occurrence of RRBs. Many studies investigating ANS activity in ASD have focused solely on its relation to social functioning. The few that have addressed RRBs have had …
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Relationship between the autonomic nervous system and the recovering heart post exercise using heart rate variability
… relationship exists between the activity of the autonomic nervous system (ANS) and the speed of heart rate recovery post maximal exercise. The parasympathetic branch of the ANS was assessed during rest by obtaining the high frequency (HF) component of the heart rate variability (HRV) frequency …
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Tracking autonomic balance using open and closed loop models of the arterial baroreflex
… blood pressure control loop mediated by the autonomic nervous system (ANS). It supports arterial blood pressure homeostasis by dynamically adjusting heart rate, vascular resistance, venous tone, and cardiac contractility. Accurate quantitative models of the baroreflex would provide …
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Understanding Autonomic Control via Human Deep Brain Stimulation
The Central Autonomic Network (CAN) consists of higher cortical areas, basal ganglia, and brainstem areas that are important in the control of the autonomic nervous system (ANS). This thesis concentrates on the control of the respiratory and cardiovascular systems both alone and in combination in …
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Circadian Rhythm in Intrinsic Heart Rate
… traditionally thought to be controlled by the autonomic nervous system (ANS). However, recent studies have concluded that diurnal HR variation arise from intrinsic remodeling in SA node. To re-examine the mechanisms controlling circadian HR fluctuations, we performed surface …
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Sveikų žmonių širdies ritmo variabilumo kitimas virtualios realybės seanso įtakoje /
… not only of physical health, but also of the autonomic nervous system (ANS) function. The ANS consists of two parts: the sympathetic and parasympathetic systems, responsible for managing bodily functions during stress and relaxation. This study aimed to determine whether virtual reality …
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Physiological responding in a two-dimensional Social Interaction Simulation
… participant was in the role of aggressor that autonomic nervous system (ANS) responses would decrease as a function of concentration or cognitive load. It was also predicted that when the participant was in the role of virtual victim, a significant increase in ANS function would be observed as …
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Cerebral Regulation of Cardiovascular Functioning and Fluency among Anxious and Nonanxious Men
… lateralized hemispheric regulation of the autonomic nervous system (ANS) among high anxious and nonanxious university undergraduate men using a novel laboratory paradigm. Specifically, this three phase paradigm entailed the administration of a verbal fluency (left frontal) and nonverbal …
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Measuring Nociception Under Anesthesia
… associated with harmful stimuli through the nervous system even when unconscious, in real time is critical during surgery. While there are measures to assess unconsciousness, immobility, and physiologic stability, objectively monitoring a patient’s nociceptive state remains challenging. …
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CHARACTERIZATION AND ESTIMATION OF MUSCULOSKELETAL PAIN USING MACHINE LEARNING
… subjective pain scores and the recording of the autonomic nervous system (ANS) altered endodermal (EDA) activity. 24 participants were recruited to undergo a post-exercise circulatory occlusion (PECO) with muscle stretch experiment for creation of discomfort. Concomitant EDA data and in-session …
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Stress Physiology and Behavior Problems
… I examined how the two components of the stress system, namely the hypothalamic-pituitary-adrenal (HPA) axis and the autonomic nervous system (ANS), interact with each other, and together interact with harsh discipline in influencing externalizing and internalizing problems. Data were drawn from …
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Autonomic Nervous System Correlates of Emotion Regulation in Autistic Adults
… by autistic adults and has been explored as a transdiagnostic mechanism contributing to anxiety and depression in autistic adults. Previous research has found that emotion regulation strategies and autonomic nervous system (ANS) responses involved in emotion regulation differ between autistic and …
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The role of the catecholaminergic projections to the forebrain in the modulation of autonomic responses to stress
… and blood pressure through activation of the autonomic nervous system (ANS). Stressors also elicit the release of the neuromodulatory catecholamines dopamine (DA) and noradrenaline (NA) in several regions of the forebrain. Although many of these regions project to brainstem nuclei involved in …
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Physical Activity, Heart Rate Variability, Sleep Parameters, and Glycemic Variability in T1D
… In particular, limited evidence exists on how autonomic nervous system (ANS) function, as measured by heart rate variability (HRV), interacts with daily movement behaviors to influence glycemic stability. Objective: This study aimed to examine (1) whether daily movement behaviors modify the …
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Modeled and Unmodeled Approaches for Quantification of the Cardiac Autonomic Nervous System
The autonomic nervous system (ANS) is a branch of the nervous system that regulates involuntary functions within the body, such as blood pressure control (the baroreceptor reflex) and arousal. Tracking ANS activity in patients may provide information about traumatic brain injury, heart failure, …
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A Window Into Autonomic Nervous System Functioning in Autism: Pupillometry in Adults on the Autism Spectrum
<p>The autonomic nervous system (ANS) regulates physiological processes throughout the body and disruption or imbalance of that system has been associated with negative physical and psychological outcomes. Pupil responsivity is controlled by the autonomic nervous system and has been show to index …
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The effect of aerobic base training on heart-rate variability and performance in elite youth football players
… for elite athletes. Monitoring training load means an athletes load can then be manipulated in order to avoid undertraining or overtraining. There are many methods that can be used to monitor training load and differing ways of manipulating training load. Training load is monitored in order to …
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Effects of sleep deprivation on autonomic nervous system
… events by increasing the sympathetic nervous system activity. The aim of the present study was to evaluate the relationship between sleep deprivation and the autonomic nervous system activity by means of heart rate variability (HRV) and blood pressure variability (BPV). All data were …
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