An optimized lead system for long-term esophageal electrocardiography.

abstract：:The use of artificial neural networks (ANNs) to interpret sleep monitoring signals is described. Recordings from ten infants with apparent life threatening episodes were assigned into training feedforward R-PROP networks. In order to separate good signal from artefact, 60 second time frames of SaO2 and TcPO2 signals w...

journal_title：Physiological measurement

authors： Taktak AF,Simpson S,Patel S,Meyer G

更新日期：2000-08-01 00:00:00

abstract：:The aim of this study was to establish whether analysis of the left ventricular pressure waveform provides indicative information about cardiac load and contractility and to develop an algorithm for computer-based assessment of changes in these variables. In eight healthy standard breed anaesthetized open-chest pigs, ...

journal_title：Physiological measurement

authors： Söderqvist E,Hultman J,Källner G,Nowak J,Brodin LA

更新日期：2006-12-01 00:00:00

abstract：:Multiple frequency bio-electrical impedance analysis (MFBIA) may be useful for monitoring fluid balance in newborn infants or to provide early prediction of the outcome following perinatal asphyxia. A reference range of data is needed for identification of babies with abnormal impedance values. This was a cross-sectio...

journal_title：Physiological measurement

authors： Healy GN,Lingwood BE

更新日期：2006-11-01 00:00:00

abstract：:Reliability of cerebral blood flow velocity (CBFV) and dynamic cerebral autoregulation estimates (expressed as autoregulation index: ARI) using spontaneous fluctuations in blood pressure (BP) has been demonstrated. However, reliability during co-administration of O2 and CO2 is unknown. Bilateral CBFV (using transcrani...

journal_title：Physiological measurement

authors： Minhas JS,Syed NF,Haunton VJ,Panerai RB,Robinson TG,Mistri AK

更新日期：2016-05-01 00:00:00

abstract：OBJECTIVE:Transfer function analysis (TFA) of dynamic cerebral autoregulation (dCA) requires smoothing of spectral estimates using segmentation of the data (SD). Systematic studies are required to elucidate the potential influence of SD on dCA parameters. APPROACH:Healthy subjects (HS, n = 237) and acute ischaemic str...

journal_title：Physiological measurement

authors： Panerai RB,Intharakham K,Haunton V,Minhas JS,Llwyd O,Lam M,Salinet ASM,Nogueira RC,Katsogridakis E,Maggio P,Robinson TG

更新日期：2020-04-17 00:00:00

abstract：:The assessment and diagnosis of lower limb peripheral arterial occlusive disease (PAOD) is important since it can lead progressively to disabling claudication, ischaemic rest pain and gangrene. Historically, the first assessment has been palpation of the peripheral pulse since it can become damped, delayed and diminis...

journal_title：Physiological measurement

authors： Allen J,Oates CP,Lees TA,Murray A

更新日期：2005-10-01 00:00:00

abstract：:The electrocardiogram (ECG) is a well studied signal from which many clinically relevant parameters can be derived, such as heart rate. A key component in the estimation of these parameters is the accurate detection of the R peak in the QRS complex. While corruption of the ECG by movement artefact or sensor failure ca...

journal_title：Physiological measurement

authors： Johnson AE,Behar J,Andreotti F,Clifford GD,Oster J

更新日期：2015-08-01 00:00:00

abstract：:The specific heat capacity of tissue is a critical parameter for thermal therapies that act over a long period of time. It is also critical for thermoacoustic signal generation. We present ex vivo measurements of specific heat capacity performed by a dual-pin probe with tight temperature control of the specimen. One 3...

journal_title：Physiological measurement

authors： Patch SK,Rao N,Kelly H,Jacobsohn K,See WA

更新日期：2011-11-01 00:00:00

abstract：:A gamma fit facilitates smoothing and extrapolation of distorted tracer-dilution curves in blood flow studies. Theoretically based empirical estimators were developed as simple alternatives to direct regression approaches from simulated gamma distributions with a wide range of shape asymmetry. Key curve features of pe...

journal_title：Physiological measurement

authors： Lopatatzidis A,Millard RK

更新日期：2001-11-01 00:00:00

abstract：:Objective assessment of stroke-patients' ability to control arm movements is vital for evidence-based therapy and progress monitoring. This study compares three different indices to quantify the quality of wrist movement during a task involving tracking a target on a screen. Each method is assessed in terms of agreeme...

journal_title：Physiological measurement

authors： Notley SV,Turk R,Pickering R,Simpson DM,Burridge JH

更新日期：2007-08-01 00:00:00

abstract：OBJECTIVE:Tensiomyography (TMG) and myotonometry (MMT) are two novel technologies that measure neuromuscular properties. These two devices measure the stiffness of the soft tissue as well as other variables. The aim of this study is to analyze if there is any correlation between maximal radial displacement (Dm) and Sti...

journal_title：Physiological measurement

authors： Labata-Lezaun N,López-de-Celis C,Llurda-Almuzara L,González-Rueda V,Cadellans-Arróniz A,Pérez-Bellmunt A

更新日期：2020-12-31 00:00:00

abstract：:Myoelectrical pattern classification is a crucial part in multi-functional prosthesis control. This paper investigates a discriminant Fourier-derived cepstrum (DFC) and feature-level post-processing (FLPP) to discriminate hand and wrist motions using the surface electromyographic signal. The Fourier-derived cepstrum t...

journal_title：Physiological measurement

authors： Chen X,Zhu X,Zhang D

更新日期：2009-12-01 00:00:00

abstract：:We present an adaptive algorithm for solving the inverse problem in electrical impedance tomography. To strike a balance between the accuracy of the reconstructed images and the computational efficiency of the forward and inverse solvers, we propose to combine an adaptive mesh refinement technique with the adaptive Ka...

journal_title：Physiological measurement

authors： Li T,Isaacson D,Newell JC,Saulnier GJ

更新日期：2014-06-01 00:00:00

abstract：:A new image reconstruction algorithm is proposed to visualize static conductivity images of a subject in magnetic resonance electrical impedance tomography (MREIT). Injecting electrical current into the subject through surface electrodes, we can measure the induced internal magnetic flux density B = (Bx, By, Bz) using...

journal_title：Physiological measurement

authors： Park C,Park EJ,Woo EJ,Kwon O,Seo JK

更新日期：2004-02-01 00:00:00

abstract：OBJECTIVE:Bioimpedance has been used to investigate changes in electrical parameters during ischemia in various tissues. The small intestine is a multi-layered structure, with several distinct tissue types, and ischemia related changes occur at different times in the different intestinal layers. When investigating how ...

journal_title：Physiological measurement

authors： Strand-Amundsen RJ,Reims HM,Tronstad C,Kalvøy H,Martinsen ØG,Høgetveit JO,Ruud TE,Tønnessen TI

更新日期：2017-05-01 00:00:00

abstract：:Vital signs monitoring is ubiquitous in clinical environments and emerging in home-based healthcare applications. Still, since current monitoring methods require uncomfortable sensors, respiration rate remains the least measured vital sign. In this paper, we propose a video-based respiration monitoring method that aut...

journal_title：Physiological measurement

authors： Janssen R,Wang W,Moço A,de Haan G

更新日期：2016-01-01 00:00:00

abstract：OBJECTIVE:To quantify the presence of cardiorespiratory interaction in a group of 41 healthy subjects performing a subset of the Ewing test battery. APPROACH:We measure the empirical distribution of the cardiorespiratory coupling time (RI), defined as the time from inspiration onset to R peaks in the ECG. The study pr...

journal_title：Physiological measurement

authors： Sobiech T,Buchner T,Krzesiński P,Gielerak G

更新日期：2017-11-30 00:00:00

abstract：:During voluntary contractions in humans, the subcutaneous tissues between surface electrodes and active motor units have been shown to attenuate surface electromyographic (EMG) signal amplitude. The purpose of this investigation was to examine the relationship between adipose tissue thickness and the electromechnical ...

journal_title：Physiological measurement

authors： Stock MS,Thompson BJ

更新日期：2016-03-01 00:00:00

abstract：:The recently-introduced technique of detrended fluctuation analysis (DFA) for heart-rate variability appears to yield improved prognostic power in cardiovascular disease through calculation of the fractal scaling exponent alpha. However, the physiological meaning of alpha remains unclear. In DFA, the signal is segment...

journal_title：Physiological measurement

authors： Willson K,Francis DP,Wensel R,Coats AJ,Parker KH

更新日期：2002-05-01 00:00:00

abstract：:In the clinical environment the reliable interpretation of EIT images depends on the quality of the data. In the electrically noisy hospital environment the system performance needs to be assessed for each clinical investigation. From the model of noise presented, a figure of merit for comparisons of system performanc...

journal_title：Physiological measurement

authors： Meeson S,Blott BH,Killingback AL

更新日期：1996-11-01 00:00:00

abstract：:False intensive care unit (ICU) alarms induce stress in both patients and clinical staff and decrease the quality of care, thus significantly increasing both the hospital recovery time and rehospitalization rates. In the PhysioNet/CinC Challenge 2015 for reducing false arrhythmia alarms in ICU bedside monitor data, th...

journal_title：Physiological measurement

authors： Krasteva V,Jekova I,Leber R,Schmid R,Abächerli R

更新日期：2016-08-01 00:00:00

abstract：:Although people spend a third of their day engaged in sedentary activities, research on heart activity during sitting is almost nonexistent because of the discomfort experienced when electrocardiogram (ECG) measurement electrodes are attached to the body. Accordingly, in this study, a system was developed to monitor h...

journal_title：Physiological measurement

authors： Lim E,Lee HK,Myoung HS,Lee KJ

更新日期：2015-03-01 00:00:00

abstract：:The purpose of this study was to investigate the linearity and reliability of the mechanomyographic (MMG) amplitude versus submaximal isometric force relationship for the vastus lateralis. Twenty healthy subjects (mean +/- SD age = 24.0 +/- 4.3 years) volunteered to perform submaximal isometric muscle actions of the d...

journal_title：Physiological measurement

authors： Beck TW,DeFreitas JM,Stock MS

更新日期：2009-10-01 00:00:00

abstract：OBJECTIVE:Advanced neuroimaging has proved to be pivotal in the management of acute ischemic stroke. The use of CT perfusion (CTP) core and penumbra parameters to predict the outcome in wake-up stroke (WUS) patients in everyday clinical scenarios has not yet been investigated. The aim of our study was to investigate th...

journal_title：Physiological measurement

authors： Ajčević M,Furlanis G,Stella AB,Cillotto T,Caruso P,Ridolfi M,Lugnan C,Miladinović A,Ukmar M,Cova MA,Accardo A,Manganotti P,Naccarato M

更新日期：2020-08-11 00:00:00

abstract：:Non-invasive in vivo neutron activation analysis (NAA) was used to measure the fluorine concentration in 35 people in Hamilton, Ontario, Canada. Measurement and precision data of this second generation NAA system were determined in 2013, and the results were compared with the performance of a first generation system u...

journal_title：Physiological measurement

authors： Mostafaei F,McNeill FE,Chettle DR,Wainman BC,Pidruczny AE,Prestwich WV

更新日期：2015-03-01 00:00:00

abstract：OBJECTIVE:Electrical impedance tomography (EIT) is a functional imaging technique in which cross-sectional images of structures are reconstructed based on boundary trans-impedance measurements. Continuous functional thorax monitoring using EIT has been extensively researched. Increasing the number of electrodes, number...

journal_title：Physiological measurement

authors： Shiraz A,Khodadad D,Nordebo S,Yerworth R,Frerichs I,van Kaam A,Kallio M,Papadouri T,Bayford R,Demosthenous A

更新日期：2019-04-03 00:00:00

abstract：OBJECTIVE:To investigate the feasibility of the detection of brief orofacial pain sensations from easily recordable physiological signals by means of machine learning techniques. APPROACH:A total of 47 subjects underwent periodontal probing and indicated each instance of pain perception by means of a push button. Simu...

journal_title：Physiological measurement

authors： Teichmann D,Klopp J,Hallmann A,Schuett K,Wolfart S,Teichmann M

更新日期：2018-09-27 00:00:00

abstract：OBJECTIVE:An artefact-free electrocardiogram (ECG) is essential during cardiac arrest to decide therapy such as defibrillation. Mechanical cardiopulmonary resuscitation (CPR) devices cause movement artefacts that alter the ECG. This study analyzes the effectiveness of mechanical CPR artefact suppression filters to rest...

journal_title：Physiological measurement

authors： Isasi I,Irusta U,Aramendi E,Idris AH,Sörnmo L

更新日期：2020-11-06 00:00:00

abstract：OBJECTIVE:Metal exposures have been linked with many adverse health outcomes affecting nearly every system in the body. Exposure to metals has been tracked primarily using blood. Blood metal concentrations have drawbacks as biomarkers stemming from the metals' short biologic half-lives, shipping and storage requirement...

journal_title：Physiological measurement

authors： Specht AJ,Kponee K,Nkpaa KW,Balcom PH,Weuve J,Nie LH,Weisskopf MG

更新日期：2018-08-31 00:00:00

abstract：OBJECTIVE:Currently, continuous blood pressure (BP) measurements are mostly based on multi-sensor combinations and datasets with limited BP ranges. Besides, most BP-related features derive from the photoplethysmogram (PPG) signal. The mechanism of PPG signal formation is not considered. We aimed to design a noninvasive...

journal_title：Physiological measurement

authors： Hu Q,Deng X,Wang A,Yang C

更新日期：2021-01-01 00:00:00