General sympathetic dysfunction has been proposed as an explanation for the inability to reach normal heightened attention in Down's syndrome (DS). The present study on 15 DS subjects (group average age +/- SD, 14.3 +/- 3.6 years; 11 males) and in an equal number of age- and gender-matched normal subjects (NS), evaluated activity in different subdivisions of the sympathetic nervous system. DS s...

The topic of this particular study is to combine facial expressions, skin response and willingness pay (WTP) using an iMotions Platform. This software solution combines biosensors in human behaviour research. A useful method estimate WTP contingent valuation (CV) (Mitchell Carson 1989). has been widely used cultural economics (Noonan 2003) sport (Walker Mondello 2007, Wicker et al. 2016a). CV m...

We evaluated sympathetic nervous system activity by sympathetic skin response (SSR) recording and we further investigated sympathetic and opioid outflow indirectly in patients with features of reflex sympathetic dystrophy by measuring concentrations of plasma catecholamines (CAs) and their metabolites and plasma metenkephalin (ME), before and after corticoid treatment. Six patients were studied...

Erythromelalgia is a clinical diagnosis characterized by erythema, increased temperature and burning pain in acral skin. The pain is relieved by cooling and aggravated by warming. The symptoms have been hypothesized to be caused by skin hypoxia due to increased arteriovenous shunting. We examined skin microvascular perfusion in response to vasoconstrictory and vasodilatory stimuli, to character...

While autonomic outflow is an important co-factor of nausea physiology, central control of this outflow is poorly understood. We evaluated sympathetic (skin conductance level) and cardiovagal (high-frequency heart rate variability) modulation, collected synchronously with functional MRI (fMRI) data during nauseogenic visual stimulation aimed to induce vection in susceptible individuals. Autonom...

Autonomic nervous function in response to cold was investigated in 21 patients with vibration-induced white finger (VWF) and 17 healthy controls of similar age, using power spectral analysis of heart rate variability. In a supine position, electrocardiogram and skin temperature of both index fingers were measured during immersion of right hand in cold water at 10 degrees C for 10 minutes. Auton...

Cui, Jian, Satoshi Iwase, Tadaaki Mano, and Hiroki Kitazawa. Responses of sympathetic outflow to skin during caloric stimulation in humans. Am. J. Physiol. 276 (Regulatory Integrative Comp. Physiol. 45): R738–R744, 1999.—We previously showed that caloric vestibular stimulation elicits increases in sympathetic outflow to muscle (MSNA) in humans. The present study was conducted to determine the e...

The aim of the present study is to examine the relations between emotional expressivity measured by Berkeley Expressivity Questionnaire and physiological response in situations where positive and negative affects were induced. On 65 participants four physiological parameters, including finger pulse amplitude, heart rate, skin conductance level and amplitude of skin conductance response were mea...

Previous studies have suggested that religious worship experiences may recruit the autonomic nervous system (ANS) in an activating fashion. For this reason, we hypothesized measurements of electrodermal activity (EDA) would concur with notion subjective experience sensing presence God recruits a sympathetic response. We analyzed EDA 37 evangelical participants and calculated classic galvanic sk...

The sympathetic innervation of the skin primarily subserves thermoregulation, but the system has also been commandeered as a means of expressing emotion. While it is known that the level of skin sympathetic nerve activity (SSNA) is affected by anxiety, the majority of emotional studies have utilized the galvanic skin response as a means of inferring increases in SSNA. The purpose of the present...