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 26 for “"Parasympathetic nervous system"”.
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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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Cerebral Regulation of Cardiovascular Functioning and Fluency among Anxious and Nonanxious Men
… 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 fluency …
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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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QT-interval adaptation to changes in autonomic balance
… as it relates to the influence of the autonomic nervous system on the heart, is primarily studied via frequency-domain and time-domain analysis of heart rate variability (HRV). HRV studies the variability of the RR intervals in the ECG; these intervals are modulated by the autonomic influence on …
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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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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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The Autonomic Correlates of Listening Effort
… were driven by empirical evidence on autonomic nervous system activity and motivational intensity theory (Brehm, 1989; Wright, 1996), to provide a systematic, inclusive and theory-driven examination of the physiological correlates of listening effort. It was hypothesised that, to avoid wasting …
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Investigation of heart rate variability during sleep apnea
… has strong modulating effects on the autonomic nervous system, with prominent heart rate variation. It can be assumed that during sleep, internal influences (sympathetic and parasympathetic nervous system activities) dominate the autonomic nervous system; in addition repetitive apneas are …
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An experimental study of exposure-based and emotion-focused interventions: Strange bedfellows, or a match made in heaven?
… = .56, p < .001) was positively correlated with parasympathetic nervous system activity when controlled for variability in these emotional states.
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Effect of low intensity exercise training on circulatory and autonomic measures in patients with peripheral artery disease.
… power, high frequency power, total power, parasympathetic nervous system indicator and sympathetic nervous system indicator), tests of walking performance (pain-free, functional and maximal walking distance as well as the 6 minute walk test) and self-report measures (the Walking Impairment …
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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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Coping with social stress in early adolescence: The interactive contribution of observed emotional climate and youth physiology
… influences likely vary depending on youths’ parasympathetic nervous system (PNS) functioning which reflects their physiological responsiveness to environmental stimuli. The aforementioned gaps in the literature were addressed in the current two-wave longitudinal study of 100 mother-youth (53% …
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Creation of a Virtual Interface for Stress-Trauma Investigations through Open World Navigation: An Exploration of Tolerability and Physiological Reactions
… interest in alternative theories such as stress system reactivity have received interest in recent literature, but empirical methods to test them has been lacking. Thus, the purpose of this thesis was to explore the relationship between stress and trauma using a known stressor and a newly …
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Maternal Cardiac Autonomic Function and Fetal Behaviour in Hypertensive and Obese Pregnancies
… a decrease in the average baroreflex slope, parasympathetic nervous system indicator and high frequency power compared to the supine position. In a 20 min observation of spontaneous behaviour in the maternal supine compared to the standing position, fetuses of hypertensive mothers had, on …
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Altered Autonomic Nervous System Function in Chickens Divergently Selected for Body Weight
Autonomic nervous system activity is related to body weight regulation. Based on the MONA LISA hypothesis it has been suggested that most obese subjects and animals have low sympathetic nervous system activity. The aim of this study was to investigate whether there are differences in autonomic …
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The contribution of coping related variables and cardiac vagal activity on performance under pressure.
… regulation. It is suggested that activity in the parasympathetic nervous system, termed cardiac vagal activity, is a marker of self-regulation as theorised by the neurovisceral integration model (Thayer et al. 2009). This psychophysiological marker has been shown to be sensitive to pressure and …
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Innovative spinal cord injury rehabilitation in the context of a middle-income country: a pilot randomised control study investigating physiological and psychological effects
… may improve health and wellbeing after SCI. A systematic review was conducted across 27 studies and 308 participants to explore the systemic effects of RLT. This review demonstrated that RLT shows promise as a tool for improving neurological rehabilitation outcomes; providing individuals with a …
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Acute and chronic effects of nitric oxide on cardiomyocyte guanylyl cyclase : implications for the modulation of the heart following environmental, physiological and clinical exposure to nitric oxide
… modulation of ventricular contractility by the parasympathetic nervous system. Environmental/occupational NO exposures, the gastric production of NO from ingested nitrites, organic nitrate vasodilator therapy and sepsis are situations in which the body tissues are exposed to elevated levels of …
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Estimulação colinérgica com piridostigmina reduz arritmia ventricular e aumenta a variabilidade da frequência cardíaca em pacientes com insuficiência cardíaca
INTRODUÇÃO. O aumento da densidade de arritmia ventricular e a redução da variabilidade da freqüência cardíaca estão associados com risco de morte súbita e mortalidade total em insuficiência cardíaca. A inibição colinesterásica com brometo de piridostigmina (PIR) aumenta a variabilidade da …
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