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 7 of 7 for “"Sympathetic control"”.
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Sympathetic control of carotid body excitability in hypertension: A preclinical study
… and maintenance of hypertension via exacerbated sympathetic drive. Carotid bodies of spontaneously hypertensive (SH) rats exhibit both hypertonicity and hyperreflexia (i.e., hyper-excitability), which is not fully understood. Our aim was to test whether carotid body hyper-excitability is mediated …
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Principal component based system identification and its application to the study of cardiovascular regulation
… 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 control. …
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Resiliency and Autonomic Control of Cardiac Responses to Stress
… the ability to cope with stress, while effortful control (EC) is an individual difference related to the ability to optimally inhibit negative emotion through attentional mechanisms. ER has been linked to flexible cardiovascular responding without accounting for autonomic nervous system origins of …
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Circadian Rhythm in Intrinsic Heart Rate
… HR fluctuations are 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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Adenylyl Cyclase Type 9: Regulation and Cardiac Function
… pathways normally integrate signals from the sympathetic nervous system to promote efficient contraction and relaxation under stress. Sympathetic control through β-adrenergic stimulation is propagated by adenylyl cyclase (AC). AC synthesizes cyclic AMP (cAMP), an important second messenger …
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Graded Cerebral Activation to Noise: Behavioral and Cardiovascular Effects
… temporal region generates increasing levels of sympathetic control of heart rate and blood pressure and that the right lateral frontal region acts to inhibit sympathetic activity. A total of 45 right handed men, with no history of significant head injury, were exposed to 55 dB, 75 dB, and 90 dB …
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The role of renal afferent signalling in chronic intermittent hypoxia-induced sympathoexcitation and hypertension
… low-pressure baroreceptors. Blunted baroreflex control of renal sympathetic nerve activity (RSNA) was revealed in hypertension models that involve renal inflammation. Suppression of inflammation restored the normal baroreflex control of RSNA in some of these models, suggesting that renal …