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Dissertations / Theses on the topic 'Autonomic (sympathetic and parasympathetic'

Author: Grafiati

Published: 5 June 2025

Last updated: 1 August 2025

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1

Harden, Scott. "MICROSCOPIC ANALYSIS OF SYMPATHETIC AND PARASYMPATHETIC DISTRIBUTION, TERMINAL MORPHOLOGY, AND INTERACTION IN WHOLE-MOUNT ATRIA." Master's thesis, University of Central Florida, 2009. http://digital.library.ucf.edu/cdm/ref/collection/ETD/id/2156.

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The sympathetic (SNS) and parasympathetic (PSNS) branches of the autonomic nervous system (ANS) innervate the heart, exerting excitatory and inhibitory influences (respectively) over cardiac functions (heart rate, AV conduction velocity, and contractility). However, the distribution and structure of SNS and PSNS innervation has not yet been well studied. Detailed characterization of the distributional organization and structural morphology of the SNS and PSNS in normal states is essential to the study of pathological autonomic remodeling. The present study utilized double immunohistochemical l

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2

Michael, Scott William. "Monitoring non-invasive indices of cardiac autonomic activity during acute post-exercise recovery." Thesis, The University of Sydney, 2016. http://hdl.handle.net/2123/16309.

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Background: Consistent with the ‘reactivity hypothesis’, monitoring autonomic responses to exercise might be of value in clinical and high-performance settings. Post-exercise autonomic recovery may be non-invasively assessed using heart rate variability indices of cardiac parasympathetic neural activity (cPNA-HRV) and systolic time intervals reflecting cardiac sympathetic neural activity (cSNA-STI). However, the dose of exercise may confound autonomic recovery, independent of underlying pathology or function. This thesis investigated how these indices respond to variations of the factors const

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3

Hallman, David. "Autonomic nervous system regulation in chronic neck-shoulder pain : Relations to physical activity and perceived stress." Doctoral thesis, Uppsala universitet, Institutionen för folkhälso- och vårdvetenskap, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-187613.

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Neck-shoulder pain (NSP) is a highly prevalent musculoskeletal disorder with unclear causes, and effective prevention and treatment require a further understanding of the underlying mechanisms. Aberrant autonomic nervous system (ANS) regulation is a hypothesized causal element in the development and maintenance of chronic muscle pain. The overall aim of this thesis was to investigate possible differences in ANS regulation between chronic NSP and healthy control (CON) groups using both laboratory assessment and ambulatory monitoring in daily life. Four papers are included in this thesis, based

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4

Sawyer, Judy. "Personality and Behavioral Correlates of Autonomic Imbalance." Thesis, University of North Texas, 1988. https://digital.library.unt.edu/ark:/67531/metadc331370/.

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Individual differences in autonomic nervous system responsiveness have been linked to a variety of physical disorders and personality and behavioral tendencies. The present study attempted to correlate specific personality characteristics hypothesized to be associated with either sympathetic or parasympathetic dominance based on the work of M. A. Wenger. The Clinical Analysis Questionnaire Personality Inventory, a physical disorders questionnaire, a self-report stress measure, and seven psychophysiologic tests were administered to 60 undergraduate students in an introductory psychology class a

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5

Norman, Greg. "Psychosocial influences on physiological processes: A focus on health." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1280682539.

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6

Bi, Shuang. "Parental Problem Drinking and Children’s Adjustment: Are Associations Moderated by Patterns of Sympathetic and Parasympathetic Nervous System Activity?" UKnowledge, 2015. http://uknowledge.uky.edu/psychology_etds/62.

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Parental problem drinking (PPD) is associated with various forms of child psychopathology, including hyperactivity, conduct disorder, delinquency, depression and anxiety. However, not all children share the same risk for developing adjustment problems in the context of PPD. In this study, we examined patterns of sympathetic and parasympathetic nervous system activity account for differential susceptibility to the adverse effects of PPD in middle childhood. We found that reciprocal SNS activation protects against child internalizing symptoms in the context of mother problem drinking. We also fo

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7

Kuo, Alice Yi-Wen. "Altered Autonomic Nervous System Function in Chickens Divergently Selected for Body Weight." Thesis, Virginia Tech, 2000. http://hdl.handle.net/10919/34856.

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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 nervous system activity between lines of chickens selected for either high (HWS) or low body weight (LWS). In Exp. 1, various pharmacological agents were injected intravenously, and the changes in blood pressure (BP) and heart rate (HR) of both HWS and LWS chickens were compared. The results showed

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8

Hoshi, Rosangela Akemi [UNESP]. "Variabilidade da freqüência cardíaca como ferramenta de análise da função autonômica: revisão de literatura e comparação do comportamento autonômico e metabólico em recuperação pós-exercício." Universidade Estadual Paulista (UNESP), 2009. http://hdl.handle.net/11449/87318.

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Made available in DSpace on 2014-06-11T19:22:49Z (GMT). No. of bitstreams: 0 Previous issue date: 2009-08-14Bitstream added on 2014-06-13T19:08:19Z : No. of bitstreams: 1 hoshi_ra_me_prud.pdf: 470187 bytes, checksum: 5cba677581b43beb6b7309e781ff9714 (MD5)<br>Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)<br>O sistema nervoso autônomo (SNA) desempenha um papel importante na regulação dos processos fisiológicos do organismo humano tanto em condições normais quanto patológicas. Dentre as técnicas utilizadas para sua avaliação, a variabilidade da frequência cardíaca (VFC) te

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9

Chen, Jennifer C. "Autonomic imbalance - a precursor to myopia development?" Thesis, Queensland University of Technology, 2003. https://eprints.qut.edu.au/15803/1/Jennifer_Chen_Thesis.pdf.

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While prolonged nearwork is considered to be an environmental risk factor associated with myopia development, an underlying genetic susceptibility to nearwork-induced accommodative adaptation may be one possible mechanism for human myopia development. As the control of accommodation by the autonomic system may be one such genetically predetermined system, this research sought to investigate whether an anomaly of the autonomic control of accommodation may be responsible for myopia development and progression. The emphasis of this work was determining the effect of altering the sympathetic in

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10

Chen, Jennifer C. "Autonomic Imbalance - a Precursor to Myopia Development?" Queensland University of Technology, 2003. http://eprints.qut.edu.au/15803/.

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While prolonged nearwork is considered to be an environmental risk factor associated with myopia development, an underlying genetic susceptibility to nearwork-induced accommodative adaptation may be one possible mechanism for human myopia development. As the control of accommodation by the autonomic system may be one such genetically predetermined system, this research sought to investigate whether an anomaly of the autonomic control of accommodation may be responsible for myopia development and progression. The emphasis of this work was determining the effect of altering the sympathetic

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11

Onyemaechi, Clinton. "Autonomic Nerve Activity and Cardiovascular Function in the Chicken Embryo (Gallus gallus)." Thesis, University of North Texas, 2018. https://digital.library.unt.edu/ark:/67531/metadc1404516/.

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The goal of this study was to build on the historic use of the avian model of development and also to further the knowledge of autonomic nervous system (ANS) regulation of cardiovascular function in vertebrates. Vasoactive drugs sodium nitroprusside, a vasodilator and phenylephrine, a vasoconstrictor were used to study the correlation of cardiovascular function relationship with nerve activity, both sympathetic and parasympathetic (vagal). Additionally, ANG II was used to assess its effects on vagal inhibition. The present study shows that pharmacologically-induced hypertension is associated w

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12

Hoshi, Rosangela Akemi. "Variabilidade da freqüência cardíaca como ferramenta de análise da função autonômica : revisão de literatura e comparação do comportamento autonômico e metabólico em recuperação pós-exercício /." Presidente Prudente : [s.n.], 2009. http://hdl.handle.net/11449/87318.

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Orientador: Carlos Marcelo Pastre<br>Banca: Luiz Carlos Marques Vanderlei<br>Banca: Moacir Fernandes de Godoy<br>Resumo: O sistema nervoso autônomo (SNA) desempenha um papel importante na regulação dos processos fisiológicos do organismo humano tanto em condições normais quanto patológicas. Dentre as técnicas utilizadas para sua avaliação, a variabilidade da frequência cardíaca (VFC) tem emergido como uma medida simples e não-invasiva dos impulsos autonômicos, representando um dos mais promissores marcadores quantitativos do balanço autonômico. A VFC descreve as oscilações no intervalo entre b

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13

Nackley, Brittany B. "Temporal Dynamics of the Defense Cascade." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/99987.

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Understanding physiological responses to threat can inform therapeutic interventions for phobias, anxieties, and PTSD. The defense cascade is reviewed as a theoretical model that predicts behavioral and physiological responses to threats. Nineteen undergraduates (five male), average age 19.4 experienced a novel virtual reality (VR) threat scenario while their physiology was measured. The Subjective Units of Distress Scale (SUDS) was used as a self-report indicator of distress in the research setting. Averaged SUDS reports suggested that the VR stimulus was experienced as threatening for mo

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14

Foster, Paul Stephen. "Graded Cerebral Activation to Noise: Behavioral and Cardiovascular Effects." Diss., Virginia Tech, 2004. http://hdl.handle.net/10919/11146.

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Research has indicated that the frontal and temporal lobes are involved in the mediation of heart rate and blood pressure. However, whereas these regions of the brain have been identified in the mediation of heart rate and blood pressure, the specific cerebral processes involved in determining the direction and magnitude of change in heart rate and blood pressure has not been adequately addressed. The present paper proposes that changes in the magnitude of cerebral activation between the left and right frontal and temporal lobes is partly that which determines the direction and magnitude of

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15

Beluque, Tamyris. "Variabilidade da frequência cardíaca e qualidade de vida em cães com doença valvar mitral tratados com metoprolol /." Jaboticabal, 2019. http://hdl.handle.net/11449/183215.

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Orientador: Marlos Gonçalves Sousa<br>Resumo: A doença valvar mitral tem alta prevalência em todo o mundo e é a enfermidade cardiovascular mais diagnosticada em cães. A referida enfermidade cardíaca possui caráter progressivo, que frequentemente leva à insuficiência cardíaca congestiva. Por sua vez, a insuficiência cardíaca congestiva é uma síndrome clínica complexa que leva a um baixo débito cardíaco, hipotensão e hipoperfusão tecidual, fazendo com que as demandas de diversos órgãos não sejam devidamente supridas. Com o intuito de ajustar a falha do coração como bomba, o organismo ativa uma s

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Borrione, Lucas. "Relação entre componentes de sintomas depressivos e variabilidade de frequência cardíaca." Universidade de São Paulo, 2017. http://www.teses.usp.br/teses/disponiveis/5/5142/tde-04012018-101055/.

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INTRODUÇÃO: O transtorno depressivo maior (TDM) está associado à doença cardiovascular (DCV), possivelmente por alterações no sistema nervoso autônomo (SNA), dentre outros mecanismos. Um dos marcadores de atividade do SNA mais estudados na literatura é a variabilidade de frequência cardíaca (VFC), um índice de variação entre batimentos cardíacos. VFC elevada é sinal de um SNA saudável, enquanto VFC diminuída reflete inflexibilidade autonômica. Alguns estudos têm relatado uma relação entre o TDM e VFC reduzida, enquanto outros não confirmaram esses achados. Além de fatores de confusão, uma poss

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17

Al-Lage, Jéssica Guimarães. "Perfil epidemiológico, modulação autonômica cardíaca e escores de risco cirúrgico de indivíduos eletivos para cirurgia de revascularização do miocárdio /." Rio Claro, 2019. http://hdl.handle.net/11449/190800.

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Orientador: Robison José Quitério<br>Resumo: Introdução: Em decorrência do número elevado de comorbidades associadas à Doença Arterial Coronariana (DAC), os modelos de previsão de risco para cirurgia cardíaca foram desenvolvidos com a finalidade de melhor caracterizar os fatores que influenciam os resultados deste procedimento. Além dos escores de risco utilizados mundialmente “European System for Cardiac Operative Risk Evaluation” (EUROSCORE II) e “Society of Thoracic Surgeons” (STS), a Variabilidade da Frequência Cardíaca (VFC) tem surgido como um novo instrumento de previsão do risco cardio

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18

Ricci, Matteo. "La stimolazione del Nervo Vago attraverso la pratica di tecniche respiratorie ai fini della neuroimmunomodulazione del riflesso infiammatorio: a Scoping Review." Bachelor's thesis, Alma Mater Studiorum - Università di Bologna, 2020. http://amslaurea.unibo.it/21932/.

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Introduzione: I neuroni colinergici ricoprono un ruolo importante nella regolazione dei processi flogistici, tale scoperta ha portato la ricerca scientifica ad approfondire questo aspetto, provando che la stimolazione del Nervo Vago può essere utilizzata nel trattamento delle patologie infiammatorie. La respirazione potrebbe essere una tecnica volta a stimolare il Nervo Vago, inducendo cosi spostamenti nell’equilibrio simpatico-vagale verso una predominanza parasimpatica, con i conseguenti riflessi anti-infiammatori. Materiali e metodi: È stata effettuata una prima ricerca in letteratura per

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19

Newell, Miranda E. "The connection between emotion, brain lateralization, and heart-rate variability /." Download the thesis in PDF, 2005. http://www.lrc.usuhs.mil/dissertations/pdf/Newell2005.pdf.

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20

Ravé, Guillaume. "Evaluation de l’adaptation à l’entraînement du footballeur professionnel par la variabilité de la fréquence cardiaque : intérêt de la position debout." Thesis, Angers, 2016. http://www.theses.fr/2016ANGE0040/document.

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Méthode simple et non invasive permettant d’évaluer l’influence du système nerveux autonome (SNA) sur la fonction cardiaque. Le SNA est constitué de deux branches aux actions antagonistes. Celle dite sympathique est cardio-activatrice et celle dite parasympathique cardio-modératrice. Très étudié dans les sports d’endurance, les indicateurs parasympathiques de la VFC issus de l’analyse spectrale (Hautes fréquences, HF) et temporelle (RootMean Square of the Successive Differences, RMSSD) s’y avèrent pertinents pour le suivi d’entraînement. Dans un sport comme le football, le grand nombre de matc

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21

Zimmerman, Amanda L. "Neuromodulation of spinal autonomic regulation." Diss., Georgia Institute of Technology, 2011. http://hdl.handle.net/1853/42777.

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The central nervous system is largely responsible for receiving sensory information from the environment and determining motor output. Yet, centrally-derived behavior and sensation depends on the optimal maintenance of the cells, tissues, and organs that feed and support these functions. Most of visceral regulation occurs without conscious oversight, making the spinal cord a key site for integration and control. How the spinal cord modulates output to our organs, or sensory information from them, is poorly understood. The overall aim of this dissertation was to better understand spinal pro

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22

Shanks, Julia A. "Cardiac sympathetic neural signalling in hypertension." Thesis, University of Oxford, 2013. https://ora.ox.ac.uk/objects/uuid:5d0c9f81-2a76-4acf-807f-a2003d362464.

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The work presented in this thesis examines the role of cardiac sympathetic signalling in the development and maintenance of hypertension in the spontaneously hypertensive rat (SHR); and the role the norepinephrine re-uptake transporter (NET) plays in the sympathetic phenotype during hypertension. <b>Chapter One</b>: reviews (i) cardiac impairment observed in hypertension, (ii) the mechanisms underlying sympathetic neurotransmission and signal termination, (iii) the structure, function, mechanism of action, and role of the norepinephrine (NE) re-uptake transporter in a number of diseases relate

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Kennard, James A. G. "Junctional modulation of sympathetic transmission." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:09b63f51-0373-4a17-955d-48d3b4e46ccb.

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This project involved the study of mechanisms which modulate autonomic transmission within the sympathetic nervous system using the mouse vas deferens as a model tissue. Data was collected using contraction studies, electrophysiological techniques with sharp microelectrodes, and fluorescent calcium imaging of both smooth muscle cells and nerve terminal varicosities. An additional series of experiments was conducted using the PC12 cell line, derived from a phaeochromocytoma of the rat adrenal medulla, for flow cytometry experiments using fluorescence-activated cell sorting. During the course of

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Kalil, Luciana Mara Pinto. "Treinamento físico e freqüência cardíaca em ratos idosos: avaliação da freqüência cardíaca intrínseca e da modulação autonômica, do repouso ao exercício de intensidade progressiva escalonada." Universidade de São Paulo, 2006. http://www.teses.usp.br/teses/disponiveis/5/5131/tde-17102014-111641/.

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Estudou-se o efeito do treinamento físico sobre a freqüência cardíaca (FC), a freqüência cardíaca intrínseca (FCI), o efeito vagal (EV), o tônus vagal (TV), o efeito simpático (ES) e o tônus simpático (TS), de ratos idosos em repouso volitivo, na esteira, e durante o exercício de intensidade progressiva (4 estágios de 5 min à 5; 7,5; 10 e 15 m.min-1). Verificaram-se, também, as respostas da FC à doses crescentes de agonistas ?-adrenérgico (isoproterenol) e muscarínico (metacolina). Utilizaram-se 20 ratos Wistar machos, aleatoriamente divididos em dois grupos: Treinado (T, 28+2 meses, 460+36 g)

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Kniel, Peter Christian. "The sympathetic, parasympathetic and enteric nervous systems of rats are differently affected by streptozotocin-diabetes /." [S.l : s.n.], 1985. http://www.ub.unibe.ch/content/bibliotheken_sammlungen/sondersammlungen/dissen_bestellformular/index_ger.html.

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26

Kakall, Zohra. "Autonomic regulation of medullary neurons following cardiorespiratory, glucoprivic and hypoglycaemic insults." Thesis, The University of Sydney, 2019. http://hdl.handle.net/2123/20798.

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The autonomic nervous system (ANS) consists of two divisions: the sympathetic (SNS) and the parasympathetic (PNS) nervous systems. Signal transduction in the ANS requires integration of sensory afferent information from the periphery, central nervous system and spinal cord. Efferent fibres of presynaptic parasympathetic neurons arise from the brainstem and sacral (‘craniosacral’) levels of the spinal cord. There are 5 cranial nerves (CN) that arise from cell bodies located in the Edinger-Westphal nuclei (CN III), superior salivatory nuclei (CN VII), inferior salivatory nuclei (CN IX) and the

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Brown, Rachael Clinical School Prince of Wales Hospital Faculty of Medicine UNSW. "Assessing the integrity of sympathetic pathways in human spinal cord injury." Awarded By:University of New South Wales. Clinical School - Prince of Wales Hospital, 2009. http://handle.unsw.edu.au/1959.4/44505.

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Spinal cord injury can result in partial or complete loss of supraspinal control of sympathetic outflow below the lesion. Despite the importance of the sympathetic nervous system in autonomic dysreflexia and orthostatic hypotension, its integrity is not currently assessed in the clinical determination of lesion level - only motor and sensory pathways are examined. The aim of this thesis was to develop non-invasive means of assessing the integrity of sympathetic pathways following human spinal cord injury. Brief innocuous electrical stimuli applied to the forehead evoked cutaneous vasoconstrict

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Kalincik, Tomas Medical Sciences Faculty of Medicine UNSW. "Disturbances of autonomic functions in spinal cord injury: autonomic dysreflexia and thermoregulation." Publisher:University of New South Wales. Medical Sciences, 2009. http://handle.unsw.edu.au/1959.4/43516.

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Disorders of the autonomic nervous system constitute serious complications of spinal cord injury (SCI) and their treatment is usually highly prioritised by spinal patients. Among these, autonomic dysreflexia and impaired thermoregulation are potentially life threatening conditions and require effective management. Olfactory ensheathing cells (OECs), progenitor cells and polymeric scaffolds have been tested in animal models of SCI and some of them have been considered for clinical trials. However, evaluation of the effect of such interventions on autonomic functions has received only rudimentar

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Espinosa, Medina Isabel. "On the development of the parasympathetic, enteric and sacral nervous systems." Thesis, Paris 6, 2017. http://www.theses.fr/2017PA066009/document.

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Les cellules de la crête neurale migrent extensivement et forment le système nerveux autonome comprenant les ganglions parasympathiques, sympathiques et entériques, qui maintiennent l'homéostasie. Dans cette étude, j'explore les migrations, interactions neuronales et dépendances moléculaires lors de la formation des circuits nerveux autonomes. Je démontre que les précurseurs des ganglions parasympathiques dérivent des précurseurs des cellules de Schwann (SCPs) qui envahissent les nerfs préganglionaires jusqu'à leur destination, proche des organes cibles (Espinosa-Medina et al., 2014). D'autre

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Keary, Therese A. "Autonomic Nervous System Functioning in Posttraumatic Stress Disorder at Rest and During Stress: The Role of the Parasympathetic Nervous System." [Kent, Ohio] : Kent State University, 2008. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=kent1219447142.

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Thesis (M.A.)--Kent State University, 2008.<br>Title from PDF t.p. (viewed Oct. 15, 2009). Advisor: Joel Hughes. Keywords: PTSD, autonomic nervous system, parasympathetic nervous system, heart rate variability. Includes bibliographical references (p. 45-57).

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Makeham, John M. "Functional neuroanatomy of tachykinins in brainstem autonomic regulation." Connect to full text, 2006. http://hdl.handle.net/2123/1960.

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Thesis (Ph. D.)--University of Sydney, 2007.<br>Title from title screen (viewed 1 November 2007). Submitted in fulfilment of the requirements for the degree of Doctor of Philosophy to the Discipline of Physiology, Faculty of Medicine. Degree awarded 2007 ; thesis submitted 2006. Bibliography: leaves 239-284. Also issued in print.

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Thrasivoulou, Christopher. "Nerve-target interactions in the mature and aged peripheral nervous system." Thesis, University College London (University of London), 1998. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.312984.

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MANO, TADAAKI. "AUTONOMIC RESPONSES TO ENVIRONMENTAL STIMULI IN HUMAN BODY." Nagoya University School of Medicine, 1994. http://hdl.handle.net/2237/16055.

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Pianca, Nicola. "Sympathetic innervation controls cardiac trophism and physiology." Doctoral thesis, Università degli studi di Padova, 2016. http://hdl.handle.net/11577/3424983.

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In this thesis I investigated the characteristics of SN-CM interaction, to elucidate if the control of CM activity by SNs occur through a direct cell to cell interaction. I studied SN-CM interaction at the level of the working myocardium, to assess if SN innervation is able to modulate locally CM structural properties. Moreover, using an in vitro model of SNs and CMs coculture I tested the hypothesis of the direct interaction between SN and CM and, evaluated the functional effects of this interaction, in vivo, at the level of the sinoatrial node, exploting the advantages of a novel optogenetic

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Kalla, Manish. "Mechanistic insights in the autonomic modulation of ventricular arrhythmia." Thesis, University of Oxford, 2015. https://ora.ox.ac.uk/objects/uuid:019a87c7-322d-4d0b-befa-0da43378b13f.

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Cardiovascular disease is the leading cause of mortality in the developed world with up to fifty percent of cases being due to sudden cardiac death. Changes in sympatho-vagal balance underpin many cardiovascular conditions including heart failure and myocardial infarction. Neuraxial modulation of the autonomic nervous system is an emerging therapy to prevent ventricular arrhythmias, the main cause of sudden cardiac death. <b>Chapter One</b> reviews our current understanding of how the cardiac autonomic nervous system influences ventricular arrhythmogenesis. A particular focus was on the contro

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Setty, Nithya. "Development and damage responses of sympathetic neurons early signalilng pathways and target denervation /." Waltham, Mass. : Brandeis University, 2009. http://dcoll.brandeis.edu/handle/10192/23231.

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Gentile, Christopher L. "Effects of Modest Weight Gain on Blood Pressure and Sympathetic Neural Activity in Nonobese Humans." Diss., Virginia Tech, 2006. http://hdl.handle.net/10919/29996.

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Obesity is associated with sympathetic neural activation and elevated blood pressure(1,2). However, it is unclear whether modest elevations in body weight are sufficient to induce increases sympathetic activity (3). Furthermore, there is a large amount of individual variability in the blood pressure response to weight change (4). The reason(s) for this inter-individual variability are still uncertain, but body fat distribution and cardiorespiratory fitness may play a role (5,6). To address these and other issues regarding the relation between adiposity, sympathetic neural activity and blood pr

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Simms, Annabel Elizabeth. "The nucleus of the solitary tract : a site for differential regulation of the sympathetic and parasympathetic components of the arterial baroreflex." Thesis, University of Bristol, 2006. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.432946.

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Meintjes, André F. (André Francois). "Autonomic Reflexes of the Heart During Acute Myocardial Ischemia." Thesis, University of North Texas, 1993. https://digital.library.unt.edu/ark:/67531/metadc279150/.

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This study investigated whether acute myocardial ischemia of the anterior left ventricular wall induced an increase in cardiac sympathetic efferent nerve activity and thereby affected regional myocardial blood flow and contractile function.

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Hogancamp, II Charles Everett. "Loss of Sympathetic Control of Cardiovascular Function Following Spinal Cord Injury." UKnowledge, 2004. http://uknowledge.uky.edu/gradschool_theses/198.

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Cardiovascular control in the human is significantly impaired after spinal cord injury(SCI) having a direct effect on the sympathetic nervous system (SNS) causing an inability toregulate vasoconstriction below the level of the lesion. The effects of SCI on the two majorcomponents of blood pressure regulation, control of plasma volume and neural control of theheart and peripheral vasculature are poorly understood. In particular, no index to diagnosedisorders to autonomic control of the heart and vasculature has been developed. The presentstudy primarily utilized noninvasively acquired, easily a

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Behling, Alice. "Estimulação colinérgica com piridostigmina reduz arritmia ventricular e aumenta a variabilidade da frequência cardíaca em pacientes com insuficiência cardíaca." reponame:Biblioteca Digital de Teses e Dissertações da UFRGS, 2001. http://hdl.handle.net/10183/2867.

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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 freqüência de pessoas normais, porém seu efeito em pacientes com insuficiência cardíaca é desconhecido. OBJETIVOS. Testar a hipótese de que a administração a curto prazo de piridostigmina reduz a densidade de arritmia ventricular e aumenta a variabilidade da freqüência cardíaca em pacientes com insuficiência

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Narasimha, Pavan. "TRACKING R-R INTERVAL DYNAMICS BETWEEN MEN AND WOMEN DURING ORTHOSTASIS USING TIME-FREQUENCY DISTRIBUTION." UKnowledge, 2007. http://uknowledge.uky.edu/gradschool_theses/458.

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To track evolution of autonomic responses during orthostasis in men and women, we used discrete pseudo-Wigner distribution based time-frequency analysis to compute dominant frequencies and spectral powers in RR intervals and Systolic Blood Pressure (SBP). Data were collected from 38 healthy volunteers (22 men, 16 women) during 10 min supine posture followed by 30 min of 700 head up tilt. The RR intervals were computed from ECG and systolic blood pressure was and spectral amplitudes of RR intervals were integrated in two regions viz., Low Frequency (LF) region defined between 0.05-0.15 Hz and H

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Smith, Michael M. "Effects of Neural Sympathetic Nerve Activity and Endothelial Function on Ventriculovascular Coupling Efficiency in Resistance and Endurance Trained Athletes." The Ohio State University, 2012. http://rave.ohiolink.edu/etdc/view?acc_num=osu1335984673.

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Burton, Alexander Robert Clinical School Prince of Wales Hospital Faculty of Medicine UNSW. "Nociception, pain and the sympathetic nervous system: neural and effector organ responses in healthy and spinal cord injured human subjects." Awarded By:University of New South Wales. Clinical School - Prince of Wales Hospital, 2009. http://handle.unsw.edu.au/1959.4/44517.

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Relatively few studies have examined the effects of nociception pe se on sympathetic nerve activity in awake healthy human subjects. Painful stimuli can produce differential responses from cutaneous and muscle postganglionic sympathetic neurones in the anaesthetised cat, and some animal and human studies suggest that nociceptive stimuli originating in different tissues may produce differential sympathetic effects- deep nociception causing vasodepressive and superficial nociception triggering an excitatory effect on cardiovascular state. It is important to understand how the sympathetic nervous

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Karlsdóttir, Mardís Sara. "Autonomic Reactivity and Recovery in Healthy Black, White, and Hispanic Women With and Without a Family History of Cardiovascular Disease." Scholar Commons, 2010. https://scholarcommons.usf.edu/etd/1676.

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Exaggerated cardiovascular reactivity and impaired recovery to psychological stress is independently related to cardiovascular disease (CVD), and may play a causal role in its development. I examined autonomic reactivity and recovery in 136 black, white, and Hispanic women who were predisposed to CVD, as indicated by a positive family history (FH+). Pre-ejection period (PEP; sympathetic) and respiratory sinus arrhythmia (RSA; parasympathetic) were measured during public speaking, mental arithmetic, and cold pressor tasks. Overall, FH+ participants exhibited greater RSA reactivity, while black

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Zhou, Xiangdong. "Brain-derived Neurotrophic Factor in Autonomic Nervous System: Nicotinic Acetylcholine Receptor Regulation and Potential Trophic Effects." Connect to full-text via OhioLINK ETD Center, 2005. http://rave.ohiolink.edu/etdc/view?acc%5Fnum=mco1130160629.

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Thesis (Ph.D.)--Medical University of Ohio, 2005.<br>"In partial fulfillment of the requirements for the degree of Doctor of Philosophy in Medical Sciences." Major advisor: Joseph F. Margiotta. Includes abstract. Document formatted into pages: iii, 226 p. Title from title page of PDF document. Bibliography: pages 80-92,130-139,149-225.

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Widmann, Andreas, Erich Schröger, and Nicole Wetzel. "Emotion lies in the eye of the listener: emotional arousal to novel sounds is reflected in the sympathetic contribution to the pupil dilation response and the P3." Elsevier, 2018. https://ul.qucosa.de/id/qucosa%3A32716.

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Novel sounds in the auditory oddball paradigm elicit a biphasic dilation of the pupil (PDR) and P3a as well as novelty P3 event-related potentials (ERPs). The biphasic PDR has been hypothesized to reflect the relaxation of the iris sphincter muscle due to parasympathetic inhibition and the constriction of the iris dilator muscle due to sympathetic activation. We measured the PDR and the P3 to neutral and to emotionally arousing negative novels in dark and moderate lighting conditions. By means of principal component analysis (PCA) of the PDR data we extracted two components: the early one was

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Shiraiwa, Keigo. "Changes in electroencephalography and cardiac autonomic function during craft activities : experimental evidence for the effectiveness of occupational therapy." Doctoral thesis, Kyoto University, 2021. http://hdl.handle.net/2433/263589.

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Mansour, Christelle. "Évaluation des altérations microcirculatoires et de la balance sympatho-vagale en situation critique : intérêt de modulateurs du système nerveux sympathique." Thesis, Lyon, 2017. http://www.theses.fr/2017LYSE1302.

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Parmi les facteurs intervienant dans la régulation et le maintien du fonctionnement d'organes, le système nerveux autonome et la microcirculation jouent un rôle prépondérant. Chez les patients critiques, comme les patients en sepsis, des altérations de la balance sympatho-vagale et de la perfusion tissulaire peuvent survenir et avoir des conséquences majeures en matière de morbidité et mortalité. La mise en oeuvre de méthodes de détection précoces de ces perturbations pourrait donc contribuer à améliorer la survie des patients à risque. En effet, le suivi des paramètres hémodynamiques, comme c

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Blockey, Paul. "The effects of ongoing nociceptor discharge on sensory and autonomic activity and the relationship between psychophysiological factors and the subjective experience of pain in reflex sympathetic dystrophy." Thesis, Blockey, Paul (1996) The effects of ongoing nociceptor discharge on sensory and autonomic activity and the relationship between psychophysiological factors and the subjective experience of pain in reflex sympathetic dystrophy. Professional Doctorate thesis, Murdoch University, 1996. https://researchrepository.murdoch.edu.au/id/eprint/52213/.

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Complex neural mechanisms are thought to underlie the development of reflex sympathetic dystrophy. Evidence in the literature to date suggests the involvement of interactive changes at the level of both the peripheral and central nervous systems. Exactly how these changes account for the various autonomic and sensory disturbances accompanying reflex sympathetic dystrophy, or how psychological factors impinge on these pathophysiological mechanisms, is still not fully understood. To investigate these issues, four studies were carried out; the first three on healthy subjects and the last on patie

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