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 122 for “"parasympathetic"”.
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The Role of the Parasympathetic Nervous System in Mindfulness-Based Analgesia
Pain is a multidimensional experience that combines sensory, affective, and cognitive factors, causing its treatment to be extremely complicated and often ineffective. Mindfulness meditation has been shown to be an effective approach to decreasing pain. While these benefits have largely been seen …
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Early Parasympathetic Activity Predicts Later Childhood Social Functioning as Mediated by Emotion Regulation
Theories of emotion regulation and social engagement indicate that resting and reactive respiratory sinus arrhythmia (RSA), which reflect vagal activity, in early childhood can inform the development of social and emotional behaviors later in life. Low RSA at baseline and during a stressful task …
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Defining Ankyrin-b Syndrome: Characterization of Ankyrin-b Variants in Mice and Men and the Discovery of a Role for Ankyrin-b in Parasympathetic Control of Insulin Release
… ankyrin-B syndrome, a link between ankyrin-B and parasympathetic control of insulin secretion. Stimulation of pancreatic beta cells by acetylcholine augments glucose-stimulated insulin secretion by inducing inositol-trisphosphate receptor (InsP3R)-mediated Ca2+ release. We report that ankyrin-B is …
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A model of sinoatrial node cell regulation by the autonomic nervous system
… is tightly regulated by the sympathetic and parasympathetic branches of the autonomic nervous system. Our understanding of sinoatrial node cell function has been greatly advanced by experimental and modeling efforts that quantitatively describe the numerous ionic currents responsible for the …
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Sleep under stress: the complex web of fear, hypervigilance and mental health in a low socioeconomic status community in South Africa
… sympathetic nervous system activity and reduced parasympathetic tone, which can be quantified through measures of autonomic nervous system function, such as heart rate variability. Heart rate variability (HRV) is a non-invasive measure of autonomic regulation of the heart which can be divided …
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Eye Accommodation, Personality, and Autonomic Balance
… nervous system is made up of two subsystems: the parasympathetic (PNS) and the sympathetic (SNS). The balance between these systems regulates bodily functioning during routine (PNS-dominant) and crisis (SNS-dominant) situations. It also controls visual accommodation for near (PNS-dominant) and far …
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Investigation of heart rate variability during sleep apnea
… sleep, internal influences (sympathetic and parasympathetic nervous system activities) dominate the autonomic nervous system; in addition repetitive apneas are accompanied by a pronounced increase in average heart rate. The aim of this study was to investigate the heart rate variability using …
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Cardiac Autonomic Assessment and Diastolic Function in Individuals with Spinal Cord Injury
… were resting, the QTVI increased after blocking parasympathetic activity via atropine. These results suggest that the QTVI may reflect both cardiac sympathetic and parasympathetic activity in those with incomplete SCI, depending on the autonomic state of the individual. Results from Study 2 …
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Heart rate variability and neurocognitive performance in blue- and white-collar workers: Implications for cardiac risks
… were obtained to complete the experiment. Higher parasympathetic activity was significantly associated to less errors made by the white-collar workers in the SWM task (r = -0.30, p = 0.04). The blue-collar workers also showed a relationship between higher parasympathetic activity and enhanced …
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Autonomic dysfunction in primary Sjögren's syndrome
… pSS patients showed objective signs of a parasympathetic and sympathetic dysfunction and also an abnormal orthostatic blood pressure reaction. However, there was a poor association between cardiovascular autonomic and exocrine function tests. Study II comprised 31 patients with type I …
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Parasympathethic Nervous Activity and Social Exclusion in Borderline Personality Disorder
… in BPD, no studies adequately connect the parasympathetic nervous system (PNS) responses of people with BPD to social exclusion which is critical to understand as the inability of the PNS of individuals with BPD to adapt to stressors may be a contributing factor to the elevated rate of …
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Principal component based system identification and its application to the study of cardiovascular regulation
… subsequently, derive representative indices of parasympathetic and sympathetic control based on physiological and experimental findings. The validity of each method is evaluated via experimental data collected following interventions with known effect on the parasympathetic or sympathetic …
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CARDIOVASCULAR AUTONOMIC IMPAIRMENT IN GBA PARKINSONIAN PATIENTS
… dysautonomia primarily affects the sympathetic, parasympathetic, or both systems and performing a genotype-phenotype analysis to explore whether individuals with severe GBA variants are at a greater risk for cardiovascular dysautonomia. Methods: The frequency and severity of autonomic symptoms …
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Investigating pupillometry as a novel mechanism for detecting emotional regulation difficulties in individuals with PTSD
… Conclusion: The findings may reflect impaired parasympathetic nervous system processes in individuals with PTSD. The finding that eye tracking, but not emotional regulation questionnaires, differentiated the groups may reflect the point that self-report measures are biased by an individual's …
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Relationship between the autonomic nervous system and the recovering heart post exercise using heart rate variability
… 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 spectrum. The recovery time was estimated by fitting an exponential curve to the heart rate post …
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Altered Autonomic Nervous System Function in Chickens Divergently Selected for Body Weight
… results suggested that HWS chickens have higher parasympathetic tone, whereas LWS chickens have a higher sympathetic nervous system tone regulating the cardiovascular system. HWS and LWS chickens displayed a similar response in BP and HR following injection of the ganglion blocker …
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