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Sympathetic skin response

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https://www.readbyqxmd.com/read/29330174/views-and-experiences-of-seeking-information-and-help-for-vitiligo-a-qualitative-study-of-written-accounts
#1
Emma Teasdale, Ingrid Muller, Amirah Abdullah Sani, Kim S Thomas, Beth Stuart, Miriam Santer
OBJECTIVES: Vitiligo is a relatively common autoimmune condition causing loss of skin pigment. Around 1 in 100 people in the UK develop vitiligo. It can have a significant impact on quality of life for many of those affected. How people access information and help for vitiligo may influence how they manage such impact. We aimed to explore people's views and experiences of seeking health information and help for vitiligo. DESIGN: Qualitative analysis of free-text responses to four open-ended questions in an online survey...
January 11, 2018: BMJ Open
https://www.readbyqxmd.com/read/29306355/neurophysiology-of-the-pelvic-floor-in-clinical-practice-a-systematic-literature-review
#2
REVIEW
Fiorella Bianchi, Giovanna M Squintani, M Osio, A Morini, C Bana, G Ardolino, M Barbieri, L Bertolasi, R Caramelli, F Cogiamian, A Currà, G de Scisciolo, C Foresti, V Frasca, E Frasson, M Inghilleri, L Maderna, L Motti, E Onesti, M C Romano, U Del Carro
Neurophysiological testing of the pelvic floor is recognized as an essential tool to identify pathophysiological mechanisms of pelvic floor disorders, support clinical diagnosis, and aid in therapeutic decisions. Nevertheless, the diagnostic value of these tests in specific neurological diseases of the pelvic floor is not completely clarified. Seeking to fill this gap, the members of the Neurophysiology of the Pelvic Floor Study Group of the Italian Clinical Neurophysiology Society performed a systematic review of the literature to gather available evidence for and against the utility of neurophysiological tests...
October 2017: Functional Neurology
https://www.readbyqxmd.com/read/29289531/epileptic-seizures-are-reduced-by-autonomic-biofeedback-therapy-through-enhancement-of-fronto-limbic-connectivity-a-controlled-trial-and-neuroimaging-study
#3
Yoko Nagai, Julia Aram, Matthias Koepp, Louis Lemieux, Marco Mula, Hugo Critchley, Sanjay Sisodiya, Mara Cercignani
BACKGROUND: Thirty-percent of patients with epilepsy are drug-resistant, and might benefit from effective noninvasive therapeutic interventions. Evidence is accumulating on the efficacy of autonomic biofeedback therapy using galvanic skin response (GSR; an index of sympathetic arousal) in treating epileptic seizures. This study aimed to extend previous controlled clinical trials of autonomic biofeedback therapy with a larger homogeneous sample of patients with temporal lobe epilepsy. In addition, we used neuroimaging to characterize neural mechanisms of change in seizure frequency following the therapy...
December 13, 2017: EBioMedicine
https://www.readbyqxmd.com/read/29216598/sympathetic-nervous-system-activity-measured-by-skin-conductance-quantifies-the-challenge-of-walking-adaptability-tasks-after-stroke
#4
David J Clark, Sudeshna A Chatterjee, Theresa E McGuirk, Eric C Porges, Emily J Fox, Chitralakshmi K Balasubramanian
BACKGROUND: Walking adaptability tasks are challenging for people with motor impairments. The construct of perceived challenge is typically measured by self-report assessments, which are susceptible to subjective measurement error. The development of an objective physiologically-based measure of challenge may help to improve the ability to assess this important aspect of mobility function. The objective of this study to investigate the use of sympathetic nervous system (SNS) activity measured by skin conductance to gauge the physiological stress response to challenging walking adaptability tasks in people post-stroke...
December 1, 2017: Gait & Posture
https://www.readbyqxmd.com/read/29200996/regulation-of-brown-adipose-tissue-activity-by-interoceptive-cns-pathways-the-interaction-between-brain-and-periphery
#5
Otto Muzik, Vaibhav A Diwadkar
To maintain thermal homeostasis, specific thermogenic tissues are under the control of central thermoregulatory networks that regulate the body's response to thermal challenges. One of these mechanisms involves non-shivering thermogenesis in brown adipose tissue (BAT), which is activated in cold environments in order to defend the body against physical damage as a result of hypothermia. The objective of our study was to assess the interaction between CNS thermoregulatory pathways and sympathetic innervation in BAT during a cold exposure paradigm...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/29197338/dose-response-studies-of-ropivacaine-in-blood-flow-of-upper-extremity-after-supraclavicular-block-a-double-blind-randomized-controlled-study
#6
Ting Li, Qiguang Ye, Daozhu Wu, Jun Li, Jingui Yu
BACKGROUND: The sympathetic block of upper limb leading to increased blood flow has important clinical implication in microvascular surgery. However, little is known regarding the relationship between concentration of local anesthetic and blood flow of upper limb. The aim of this dose-response study was to determine the ED50 and ED95 of ropivacaine in blood flow after supraclavicular block (SB). METHODS: Patients undergoing upper limb surgery and supraclavicular block were randomly assigned to receive 30ml ropivacaine in concentrations of 0...
December 2, 2017: BMC Anesthesiology
https://www.readbyqxmd.com/read/29173870/a-reappraisal-of-small-and-large-fiber-damage-in-carpal-tunnel-syndrome-new-insights-into-the-value-of-the-emla-test-for-improving-diagnostic-sensitivity
#7
Leila Triki, Hela G Zouari, Rim Kammoun, Firas Kammoun, Ines Kammoun, Kaouthar Masmoudi, Jean-Pascal Lefaucheur
OBJECTIVES: To reappraise the respective involvement of small- and large-fiber damage in carpal tunnel syndrome (CTS) and to determine the diagnostic sensitivity of autonomic tests compared to conventional nerve conduction study (NCS). METHODS: Thirty-two manual workers complaining of at least unilateral CTS were enrolled. They underwent clinical interview and completed the symptom severity scale of the Boston CTS Questionnaire (sssBCTQ) and the Neuropathic Pain Symptom Inventory (NPSI)...
November 23, 2017: Neurophysiologie Clinique, Clinical Neurophysiology
https://www.readbyqxmd.com/read/29164596/regulation-of-t-helper-cell-responses-during-antigen-presentation-by-norepinephrine-exposed-endothelial-cells
#8
Linghui Xu, Wanhong Ding, Lori L Stohl, Xi K Zhou, Shayan Azizi, Ethan Chuang, Jimmy Lam, John A Wagner, Richard D Granstein
Dermal blood vessels and regional lymph nodes are innervated by sympathetic nerves and, under stress, sympathetic nerves release norepinephrine (NE). Exposure of primary murine dermal microvascular endothelial cells (pDMECs) to NE followed by co-culture with Langerhans cells (LCs), responsive CD4+ T cells and antigen resulted in modulation of CD4+ T cell responses. NE-treatment of pDMECs induced increased production of interleukin (IL)-6 and IL-17A while downregulating interferon (IFN)-γ and IL-22 release...
November 21, 2017: Immunology
https://www.readbyqxmd.com/read/29137090/diabetic-and-sympathetic-influences-on-the-water-permeability-barrier-function-of-human-skin-as-measured-using-transepidermal-water-loss-a-case-control-study
#9
Seung Hoon Han, Ji Woong Park
The presence of long-standing hyperglycemic conditions has been suggested to lead to many skin problems associated with an impaired skin barrier function. However, the relationship between impaired skin barrier status and altered peripheral nervous system function has not yet been determined. The purpose of this study was to investigate the water evaporation rate as a measure of the permeability barrier function of diabetic skin and its relationship to diabetic sensorimotor polyneuropathy (DSPN) and peripheral autonomic neuropathy (PAN) using well-controlled confounding variables...
November 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29131019/utility-of-autonomic-function-tests-to-differentiate-dementia-with-lewy-bodies-and-parkinson-disease-with-dementia-from-alzheimer-disease
#10
Shuta Toru, Tadashi Kanouchi, Takanori Yokota, Yosuke Yagi, Akira Machida, Takayoshi Kobayashi
OBJECTIVE: We studied autonomic disturbance in patients with dementia with Lewy bodies (DLB), Parkinson disease with dementia (PDD), Alzheimer disease (AD), to determine whether autonomic function tests can be used to distinguish these disorders. METHODS: Autonomic function was tested in 56 patients with DLB, 37 patients with PDD, and 59 patients with AD by using the sympathetic skin response, coefficient of variation in R-R interval, the head-up tilt test, serum norepinephrine concentration, and 123I-meta-iodobenzylguanidine cardiac scintigraphy...
November 13, 2017: European Neurology
https://www.readbyqxmd.com/read/29118201/inflow-of-oxygen-and-glucose-into-brain-tissue-induced-by-intravenous-norepinephrine-relationships-with-central-metabolic-and-peripheral-vascular-responses
#11
R Aaron Bola, Eugene A Kiyatkin
As an essential part of sympathetic activation that prepares the organism for "fight or flight," peripheral norepinephrine (NE) plays an important role in regulating cardiac activity and the tone of blood vessels, increasing blood flow to the heart and the brain and decreasing blood flow to the organs not as necessary for immediate survival. To assess whether this effect is applicable to the brain, we used high-speed amperometry to measure the changes in nucleus accumbens (NAc) levels of oxygen and glucose induced by intravenous (iv) injections of NE in awake, freely-moving rats...
November 8, 2017: Journal of Neurophysiology
https://www.readbyqxmd.com/read/29093972/pain-processing-and-vegetative-dysfunction-in-fibromyalgia-a-study-by-sympathetic-skin-response-and-laser-evoked-potentials
#12
Marina de Tommaso, Katia Ricci, Giuseppe Libro, Eleonora Vecchio, Marianna Delussi, Anna Montemurno, Giuseppe Lopalco, Florenzo Iannone
Background: A dysfunction of pain processing at central and peripheral levels was reported in fibromyalgia (FM). We aimed to correlate laser evoked potentials (LEPs), Sympathetic Skin Response (SSR), and clinical features in FM patients. Methods: Fifty FM patients and 30 age-matched controls underwent LEPs and SSR by the right hand and foot. The clinical evaluation included FM disability (FIQ) and severity scores (WPI), anxiety (SAS) and depression (SDS) scales, and questionnaires for neuropathic pain (DN4)...
2017: Pain Research and Treatment
https://www.readbyqxmd.com/read/29084240/a-sympathetic-nervous-system-evaluation-of-obesity-stigma
#13
Michael D Oliver, Subimal Datta, Debora R Baldwin
The portrayal of obesity in the media is often one of negativity. Consequently, it may generate an increase in stigma. Obesity stigma, a form of social discrimination, is responsible for many of the negative psychological and physiological effects on individual wellness. These effects not only impact individual health, but also affect the economy, and ultimately, societal wellness. In an attempt to examine the influence of the media on obesity stigma, this study tested the hypothesis that positive priming would lead to a reduction in obesity stigma...
2017: PloS One
https://www.readbyqxmd.com/read/29073513/the-socially-evaluated-handgrip-test-introduction-of-a-novel-time-efficient-stress-protocol
#14
Johannes B Finke, Grit I Kalinowski, Mauro F Larra, Hartmut Schächinger
Most widely-used stress-induction procedures (such as the TSST and the Cold Pressor Test) require considerable effort and overhead in terms of preparation, logistics, and staff recruitment. Moreover, while known to reliably induce HPA axis activation, especially when combined with social self-threat, most conventional laboratory stressors cannot be flexibly adapted to elicit either a mainly autonomic or an additional endocrine stress response. Being a promising alternative approach, a new version of the isometric handgrip test enriched by a social-evaluative component was evaluated in the present study...
October 18, 2017: Psychoneuroendocrinology
https://www.readbyqxmd.com/read/29055714/psychophysiology-of-proactive-and-reactive-relational-aggression
#15
Dianna Murray-Close, Leigh Ann Holterman, Nicole L Breslend, Alexandra Sullivan
This study investigated the joint effects of parasympathetic and sympathetic nervous system reactivity to social and non-social stressors on proactive (i.e., goal-directed, unemotional) and reactive (i.e., emotional, impulsive) functions of relational aggression. Two hundred and forty-seven (Mage=18.77years) participants completed a series of stressor tasks while their sympathetic arousal (i.e., skin conductance) and parasympathetic arousal (i.e., respiratory sinus arrhythmia) were assessed. Participants also provided self-reports of their aggressive behavior...
October 18, 2017: Biological Psychology
https://www.readbyqxmd.com/read/29055454/spontaneous-yawning-in-patients-with-multiple-sclerosis-a-polygraphic-study
#16
Hülya Uluğut Erkoyun, Yeşim Beckmann, Nazlı Gamze Bülbül, Tülay Kurt İncesu, Nevin Gürgör Kanat, Cumhur Ertekin
BACKGROUND: Patients with multiple sclerosis (MS) suffer from the repetitive yawning and sleep problems. Yawning is observed in MS and other central nervous system disorders and yawning and swallowing may be controlled by the network of the brain stem. Therefore it is important to investigate the MS patients with various clinical and radiological locations in order to understand the role of brainstem on the yawning mechanisms. One hour polygraphic recording would be crucial method for this purpose, because it is easy to observe spontaneous yawning (SY) and spontaneous swallowing (SS) together with their electrophysiologic counterparts...
October 2017: Multiple Sclerosis and related Disorders
https://www.readbyqxmd.com/read/29049621/autonomic-nervous-system-responses-to-hearing-related-demand-and-evaluative-threat
#17
Carol L Mackersie, Lucia Kearney
Purpose: This paper consists of 2 parts. The purpose of Part 1 was to review the potential influence of internal (person-related) factors on listening effort. The purpose of Part 2 was to present, in support of Part 1, preliminary data illustrating the interactive effects of an external factor (task demand) and an internal factor (evaluative threat) on autonomic nervous system measures. Method: For Part 1, we provided a brief narrative review of motivation and stress as modulators of listening effort...
October 12, 2017: American Journal of Audiology
https://www.readbyqxmd.com/read/29017745/does-transcutaneous-nerve-stimulation-have-effect-on-sympathetic-skin-response
#18
E Esra Okuyucu, Ayşe Dicle Turhanoğlu, Murat Guntel, Serkan Yılmazer, Nazan Savaş, Ayhan Mansuroğlu
OBJECTIVE: This study examined the effects of transcutaneous electrical nerve stimulation (TENS) on the sympathetic nerve system by sympathetic skin response test. METHODS: Fifty-five healthy volunteers received either: (i) 30minutes TENS (25 participants) (ii) 30minutes sham TENS (30 participants) and SSR test was performed pre- and post-TENS. The mean values of latency and peak-to-peak amplitude of five consecutive SSRs were calculated. RESULTS: A significant amplitude difference was found between TENS and sham TENS group both in right and left hand (p=0...
October 7, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28990644/-relationship-between-homocysteinaemia-and-sympathetic-skin-response-in-parkinson-s-disease
#19
(no author information available yet)
INTRODUCTION: High levels of homocysteine linked to treatment with levodopa have been observed in patients with Parkinsons disease (PD). Our aim was to assess the influence of serum homocysteine levels and other PD-related on the sympathetic skin response. PATIENTS AND METHODS: An observational, cross-sectional study was conducted that consecutively included patients with PD. We unilaterally assessed the sympathetic skin response in the upper limbs. We measured the influence of PD severity (measured by the Hoehn and Yahr and the Schwab and England scales, and the Unified Parkinson Disease Rating Scale) and blood homocysteine, vitamin B12 and folic acid levels on the latency and amplitude of the sympathetic skin response...
October 16, 2017: Revista de Neurologia
https://www.readbyqxmd.com/read/28984660/selective-scalp-nerve-block-a-useful-technique-with-tissue-expansion-in-postburn-pediatric-alopecia
#20
Maha Ahmed Abo-Zeid, Alaa Eldin Adel Elmaddawy, Mohamed Hassan El-Fahar, Ahmed Hassan El-Sabbagh
BACKGROUND: Scalp defects can be reconstructed either with skin graft, local flaps, free flaps, or tissue expansion. Tissue expanders have been proved to be fruitful in the pediatric population. Scalp expansion has proved to be useful in the reconstruction of posttraumatic and postburn alopecic defects. Selective nerve block can be added for attenuation of sympathetic stimulation and decrease surgical stress in cranial surgeries. In this study, a comparison was done between using selective nerve block and without selective nerve block in both stages of tissue expansion procedure...
October 3, 2017: Annals of Plastic Surgery
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