Development of a novel method for assessing balance: the quantitative posturography system.

abstract：OBJECTIVE:In this research, we introduce a new methodology for atrial fibrillation (AF) diagnosis during sleep in a large population sample at risk of sleep-disordered breathing. APPROACH:The approach leverages digital biomarkers and recent advances in machine learning (ML) for mass AF diagnosis from overnight-hours o...

journal_title：Physiological measurement

authors： Chocron A,Efraim R,Mandel F,Rueschman M,Palmius N,Penzel T,Elbaz M,Behar JA

更新日期：2020-11-06 00:00:00

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：:Polysomnography (PSG) has been extensively studied for sleep staging, where sleep stages are usually classified as wake, rapid-eye-movement (REM) sleep, or non-REM (NREM) sleep (including light and deep sleep). Respiratory information has been proven to correlate with autonomic nervous activity that is related to slee...

journal_title：Physiological measurement

authors： Long X,Yang J,Weysen T,Haakma R,Foussier J,Fonseca P,Aarts RM

更新日期：2014-12-01 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

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：:A method is described that accounts for multichannel brain field data (EEG) epochs, after transformation into the frequency domain, by a single oscillating dipole source in terms of phase angles. The method produces a potential distribution for each frequency point ('FFT dipole approximation'). These maps can be subje...

journal_title：Physiological measurement

authors： Michel CM,Henggeler B,Brandeis D,Lehmann D

更新日期：1993-11-01 00:00:00

abstract：:During anaesthesia awareness and nociception are serious complications that may further lead to haemodynamic instability. Specific monitoring of depth of hypnosis and depth of analgesia based on heart rate variability (HRV) analysis is eligible to improve patient safety and reduce efforts in post-operative care. Conse...

journal_title：Physiological measurement

authors： Huhle R,Burghardt M,Zaunseder S,Wessel N,Koch T,Malberg H,Heller AR

更新日期：2012-02-01 00:00:00

abstract：:Monitoring the fetal behavior does not only have implications for acute care but also for identifying developmental disturbances that burden the entire later life. The concept, of 'fetal programming', also known as 'developmental origins of adult disease hypothesis', e.g. applies for cardiovascular, metabolic, hyperki...

journal_title：Physiological measurement

authors： Hoyer D,Żebrowski J,Cysarz D,Gonçalves H,Pytlik A,Amorim-Costa C,Bernardes J,Ayres-de-Campos D,Witte OW,Schleußner E,Stroux L,Redman C,Georgieva A,Payne S,Clifford G,Signorini MG,Magenes G,Andreotti F,Malberg H,Zaun

更新日期：2017-05-01 00:00:00

abstract：:Epidemiological studies have associated the negative effects of sedentary time and sedentary patterns on health indices. However, these studies have used methodologies that do not directly measure the sedentary state. Recent technological developments in the area of motion sensors have incorporated inclinometers, whic...

journal_title：Physiological measurement

authors： Dowd KP,Harrington DM,Bourke AK,Nelson J,Donnelly AE

更新日期：2012-11-01 00:00:00

abstract：:Energy scavenging has increasingly become an interesting option for powering electronic devices because of the almost infinite lifetime and the non-dependence on fuels for energy generation. Moreover, the rise of wireless technologies promises new applications in medical monitoring systems, but these still face limita...

journal_title：Physiological measurement

authors： Romero E,Warrington RO,Neuman MR

更新日期：2009-09-01 00:00:00

abstract：:The objective of this study was to adapt a novel near-infrared diffuse correlation spectroscopy (DCS) flow-oximeter for simultaneous and continuous monitoring of relative changes in cerebral blood flow (rCBF) and cerebral oxygenation (i.e. oxygenated/deoxygenated/total hemoglobin concentration: Δ[HbO2]/Δ[Hb]/ΔTHC) dur...

journal_title：Physiological measurement

authors： Hou Y,Shang Y,Cheng R,Zhao Y,Qin Y,Kryscio R,Rayapati A,Hayes D,Yu G

更新日期：2014-10-01 00:00:00

abstract：:The most common method of clinical measurement of arterial blood pressure is by means of the cuff sphygmomanometer. This instrument has provided fundamental quantitative information on arterial pressure in individual subjects and in populations and facilitated estimation of cardiovascular risk related to levels of blo...

journal_title：Physiological measurement

authors： Avolio AP,Butlin M,Walsh A

更新日期：2010-01-01 00:00:00

abstract：:Electrical impedance tomography (EIT) is expected to become a valuable tool for monitoring mechanically ventilated patients due to its ability to continuously assess regional lung ventilation and aeration. Several sources of interference with EIT examinations exist in intensive care units (ICU). Our objectives are to ...

journal_title：Physiological measurement

authors： Frerichs I,Pulletz S,Elke G,Gawelczyk B,Frerichs A,Weiler N

更新日期：2011-12-01 00:00:00

abstract：:Electrical impedance scanning (EIS) is a kind of potential bio-impedance measurement technology, especially aiding the diagnosis of breast cancer in women. By changing the frequency of the driving signal in turn while keeping the other conditions stable, multi-frequency measurement results on the object can be obtaine...

journal_title：Physiological measurement

authors： Liu R,Dong X,Fu F,You F,Shi X,Ji Z,Wang K

更新日期：2007-07-01 00:00:00

abstract：:A multi-frequency electrical impedance tomography system for cardiopulmonary monitoring has been designed with specialized digital signal processors developed primarily for the telecommunications sector. The system consists of two modules: a scan-head and a base-station. The scan-head, located close to the patient's t...

journal_title：Physiological measurement

authors： Robitaille N,Guardo R,Maurice I,Hartinger AE,Gagnon H

更新日期：2009-06-01 00:00:00

abstract：OBJECTIVE:The creation of artificial gravity on board a space station is one of the promising methods for preventing health problems during space missions; a short-radius centrifuge (SRC) is the model of such a method on Earth. Our goal was to evaluate the sensitivity of bioimpedance polysegmental measurements for moni...

journal_title：Physiological measurement

authors： Takhtobina YV,Shchelykalina SP,Smirnov YI,Smirnov AV,Koloteva MI,Vassilieva GY,Nikolaev DV

更新日期：2020-05-07 00:00:00

abstract：:Cardiac output (CO) monitoring is not only essential for critically ill patients in the hospital, but also for patients at home and those undergoing cardiopulmonary exercise testing. However, CO is difficult to monitor during daily activities and exercise. In this paper, we aim at developing a novel CO estimation meth...

journal_title：Physiological measurement

authors： Wang L,Poon CC,Zhang YT

更新日期：2010-05-01 00:00:00

abstract：:The widening application of automatic external defibrillators (AEDs) presents very strong requirements for external electrocardiogram (ECG) signal analysis. Highly accurate detection of shockable rhythms is required, aimed to approach the maximum of 100% sensitivity and specificity. In a previous study the performance...

journal_title：Physiological measurement

authors： Jekova I,Cansell A,Dotsinsky I

更新日期：2001-05-01 00:00:00

abstract：:Direct digital acquisition of images using a scanning laser ophthalmoscope (SLO) offers several advantages over the conventional fundus camera; in particular, the ability to produce tomographic images using a confocal aperture. This note describes measurements of the performance of an SLO. Spatial resolution, measured...

journal_title：Physiological measurement

authors： Manivannan A,Sharp PF,Forrester JV

更新日期：1994-08-01 00:00:00

abstract：:Cerebral autoregulation has been studied by linear filter systems, with arterial blood pressure (ABP) as the input and cerebral blood flow velocity (CBFV-from transcranial Doppler Ultrasound) as the output. The current work extends this by using adaptive filters to investigate the dynamics of time-varying cerebral aut...

journal_title：Physiological measurement

authors： Liu J,Simpson MD,Yan J,Allen R

更新日期：2010-10-01 00:00:00

abstract：:The standard electrocardiogram (ECG) is the most common non-invasive way to study atrial fibrillation (AF). In this respect, previous works have shown that the surface lead V(1) reflects mainly the dominant atrial frequency (DAF) of the right atrium (RA), which has been widely used to study AF. In a similar way, AF or...

journal_title：Physiological measurement

authors： Alcaraz R,Hornero F,Rieta JJ

更新日期：2011-01-01 00:00:00

abstract：OBJECTIVE:The performance of a novel unobtrusive system based on capacitively-coupled electrocardiography (ccECG) combined with different respiratory measurements is evaluated for the detection of sleep apnea. APPROACH:A sleep apnea detection algorithm is proposed, which can be applied to electrocardiography (ECG) and...

journal_title：Physiological measurement

authors： Deviaene M,Castro I,Borzée P,Patel A,Torfs T,Buyse B,Testelmans D,Van Huffel S,Varon C

更新日期：2021-01-22 00:00:00

abstract：:A simple wearable device for sit-to-stand timing detection was designed and constructed with rate gyroscopes and accelerometers and a dedicated adaptive algorithm. The method was validated by comparison with optoelectronic equipment. Results from the comparison showed a maximal error always lower than 2.5 x 10(-2) s f...

journal_title：Physiological measurement

authors： Giansanti D,Maccioni G

更新日期：2006-08-01 00:00:00

abstract：:Gated SPECT (GSPECT) was evaluated for the measurement of left ventricular ejection fraction (LVEF) by comparing with equilibrium gated radionuclide ventriculography (RNVG). A total of 99 subjects underwent GSPECT and RNVG imaging. All studies were acquired in list mode with GSPECT studies processed to give 16- and 8-...

journal_title：Physiological measurement

authors： Wright GA,McDade M,Keeble W,Martin W,Hutton I

更新日期：2001-05-01 00:00:00

abstract：:Measurement of the velocity of propagation and attenuation of ultrasound (200 kHz) is believed to be a useful non-invasive technique for assessing the mechanical properties of bone. A new method for the determination of ultrasound velocity and attenuation of longitudinal waves in cortical bone was used in vivo and in ...

journal_title：Physiological measurement

authors： Saulgozis J,Pontaga I,Lowet G,Van der Perre G

更新日期：1996-08-01 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：:In nine healthy subjects, magnetic resonance imaging was used to measure blood flow waveforms in the common (CCA), internal (ICA) and external (ECA) carotid arteries. Useful data were acquired from 14 carotid arteries in total. Flow rates were determined from regions of interest placed over the arteries in CINE-phase ...

journal_title：Physiological measurement

authors： Marshall I,Papathanasopoulou P,Wartolowska K

更新日期：2004-06-01 00:00:00

abstract：:The holy grail of neuroimaging would be to have an imaging system, which could image neuronal electrical activity over milliseconds. One way to do this would be by imaging the impedance changes associated with ion channels opening in neuronal membranes in the brain during activity. In principle, we could measure this ...

journal_title：Physiological measurement

authors： Ahadzi GM,Liston AD,Bayford RH,Holder DS

更新日期：2004-02-01 00:00:00

abstract：:Accelerometer wear location may influence physical activity estimates. This study investigates this relationship through the examination of activity patterns throughout the day. Participants from the aging research evaluating accelerometry (AREA) study (n men  =  37, n women  =  47, mean age (SD)  =  78.9 (5.5) years)...

journal_title：Physiological measurement

authors： Shiroma EJ,Schepps MA,Harezlak J,Chen KY,Matthews CE,Koster A,Caserotti P,Glynn NW,Harris TB

更新日期：2016-10-01 00:00:00

abstract：OBJECTIVE:Accurate bladder size estimation is an important clinical parameter that assists physicians, enabling them to provide better treatment for patients who are suffering from urinary incontinence. Electrical impedance tomography (EIT) is a non-invasive medical imaging method that estimates organ boundaries assumi...

journal_title：Physiological measurement

authors： Konki SK,Khambampati AK,Sharma SK,Kim KY

更新日期：2020-12-18 00:00:00